Fun, fast, and social exactly as it was intended. Experience can vary based on your guide, driver, and group you travel with. I had a pretty solid group all around. It is extremely fast paced so might help to plan out your top must see/visit spot for each country as you only have a limited time in each one.
If I did this trip again, I’d recommend foregoing all the Topdeck food experiences (fondue, dinner in Vienna, etc. - every single one was a let down, expensive and everyone that partook felt it was a colossal waste of time and money) and skip the Vienna concert. The other experiences like Moulin Rouge and everything in Switzerland was great. You will be better off going with the driver’s and your guide’s recommendations or finding your own for a better and most likely less expensive dining experience. Pro tip, look for restaurants that are busy and filled with locals - usually have the best food.
Pack cold meds and a lot of cough drops. If one person gets sick, pretty much everyone is gonna get sick at some point as it spreads fast sharing rooms and being in an enclosed spot like the bus. Pack a towel as some hostels don’t provide them and charge to use theirs. Some people snore so recommend ear plugs as well. There is a ton of walking so bring comfortable clothing and shoes. Travel adapter is a must. If you have the space for it, a small umbrella is a good idea too. Not a ton of snow (except Switzerland) but did get quite a bit of rain during my trip. Hope this helps.
