This was definitely interesting! The group was pretty large, I think we had about 20 people and you can walk up to join the tour the day of the event as well so more people probably joined same day. You get shots at every bar but really they are mixed and not really that potent. You do get drink deals at each of the pubs you go to, so if you're looking to get drunk I promise you can do so! The ruin pubs were pretty cool, especially the ones later in the our as the first couple are pretty tame. I would recommend this tour but would not say it is a must do.
They are nice but they take you to the worst bars like completely empty bars. There are so many good Ruin bars in Budapest but they avoid them like a plague. But it is cheap and maybe you meet some good people. They should just call it empty bar crawl though.
I went on this to see the ruin bars. Basically abandoned building made into bars. We were about 15 people. Everyone was 19-22 years old and I was 30. You could feel the age difference and it was difficult to keep good conversation. At the 2nd bar I left the group with my friend.