The Eurostar is a high speed train that travels part of the way underneath the English Channel (a tunnel structure known as The Chunnel) as it travels between London, Paris, and a few other cities in Belgium, Germany, and the Netherlands. It can be an easy option for day trips between these European cities.
There are three classes of tickets you can purchase where the comfort level and inclusions get better the higher class and thus higher price that you book. A Eurostar Standard ticket gives you the smallest seat space and no included food or beverage service. The highest level, Eurostar Premier, gives you pre-boarding lounge access, the largest seats, and at seat fine dining service.
Viking included the cost of our tickets and booked everyone at the middle Eurostar Plus level which includes a light meal served at our seats and the more spacious seats. Viking assigned everyone of us a seat with some passengers getting seats around a proper four top table while the rest of us were given seats that were arranged by twos or singles. Each non table seat had a tray table that folded down from the back of the seat in front of it that was wide enough to fit our lunch tray. They did try to accommodate anyone who let them know they were traveling with friends so they could be seated with each other. The seats were fairly spacious even by fluffy standards and we had storage similar to the tour bus overhead our seats for our small carry-on bags. Restrooms that were bigger than an airplane bathroom but smaller than an interior cruise cabin were spaced out enough that every train car had one. It could be very tricky for even those without mobility issues to walk the aisle between the double and single seats to reach those bathrooms while the train was moving. The train ride runs about 2 hours and 20 minutes. Each train car also had a ride time left countdown tracker that would display on an overhead TV alternating with informational messages and fun facts. Free onboard Wi-Fi was available for all the ticket classes.
As with any company's customer service, it's best to ask your questions of a couple different reps. Prior to the cruise, we had read in our trip information that you would be required to walk 300 yards to get to the train seats. Those who could not do so, were to let Viking know so that handicapped seats could be arranged. There was a warning that these would be first come first serve and may not be guaranteed.
My first attempt to contact Viking customer service to request the handicapped seating (believing that it was simply less distance to walk or some sort of tram to get to the car versus more of a place for parking wheelchairs or transferring from them), resulted in a rep who insisted that to use the handicapped seating I was required to download a form, make an appointment with my local doctor (thus paying for it too), get them to fill it out as proof, submit the completed form back to Viking and wait to see if they decide to approve it.
My second attempt to contact Viking customer service resulted in a rep who cheerfully assured me that it was as simple as letting the Viking reps at the hotel know that you'll be needing mobility assistance at the train station. No extra forms, no proof signed by our family doctor, no extra hoops necessary. I was glad to see that it was indeed as simple as that when we checked in with our Viking rep at the hotel. We also confirmed the night before that we were on the list for assistance.
Sticking with the same tour bus #1 that our group had been assigned to all along, we were told to be on the bus ready to head to the train station by 10:15AM as our tickets were for the 12:31PM train. The letter received the night before informed us that we needed to handle checking out of the hotel ourselves by 10:05AM. Since we had charged two on site restaurant dinners to the room, we did have a charge to confirm on our credit card while checking out. We opted not to bother with the hotel buffet breakfast and used the time it would have taken to eat to wait in the long lines to check out. We still made it to the bus in plenty of time.
Once on the bus, our guide shared that while he was made aware of our mobility assistance needs, we would be required to walk with the group for a while just to get into where the mobility assistance desk is stationed. Our guide left the four of us needing assistance with the employee at the desk and started to take off with the rest of the group. When we started checking in, the employee started talking about how she wasn't seeing the mobility requests and was going to refuse to provide it. We called the guide back over and the employee changed her claim to now say that she couldn't provide it because they didn't have enough employees to push the wheelchairs for four people. Each of the more able people in the groups of 2 offered to walk along behind the escort if they could at least provide one person to push the other two people in the provided wheelchairs.
The employee agreed and I got my power walking in whether I wanted to or not trying to keep up with the very kind employee who came to escort Dad in the wheelchair. She was so considerate and apologetic about our experience with the first employee. She did everything she could to work around the crowds and get us onto the small elevator lift. After checking us in with a desk employee monitoring the reserved handicapped seating around 11:20AM, she promised that someone would be back by 12:20PM to escort us to the train. She ended up coming back herself and spent the entire time apologizing that I had to walk and checking to make sure I was okay. I assured her that I could handle this much intermittent walking since we had over two hours of time sitting ahead of us. Before we boarded the train, she assured us that she had arranged for two wheelchairs to be available when we got off in Paris.