It was my first time ever go karting(YES its not only Paintball!) and I have to say I really enjoyed the rush feeling and just racing. It's so easy to learn, and the excitement is just great. Just a few tips tho(as I had no idea how to get ready before it)
-wear sports shoes, dont wear sandals or anything like that(in case you forget, they give you shoes tho so its perfect!)
-don't carry a lot of valuable things, but even if you do you could put it in a locker for 1$
-don't be scared to go a bit fast but not too much, as then you start enjoying it a lot
-time flies by! enjoy