Champs Karting is electric carting. What this really means is a real asphalt indoor track complete with chicanes and straight-aways and little cars that go pretty quick for the size - I'm told 35mph. Safety equipment - helmets with optional helmet socks and required neck braces - are provided or you can bring your own.
The format is time-trials -where a handful 4-6 usually people go out around the track about nine times, trying to get the fastest lap time they can. You aren't really racing other people at this point, just yourself. But after the trials, the fastest people get in a position-race, which means you're seeded by fasted lap time from the time trials and whoever finishes first wins. Since passing is hard unless someone wipes out, that's why you want a fast time-trial.
It's completely safe, lots of fun, well-referreed, and not very noisy.
In addition, the facilities have some food, lots of snacks, beer, etc. Yes, you can drive under the influence on THIS track, although if you drive aggressively or badly they can cut your power with remote control.
Cost varies with purchased runs, but a 'time-trial' runs about five minutes with a bunch of time before and after - getting prepped, getting to the car - and you need a LOT of recovery time between them. So even though a run isn't cheap, a lot of time is very happily spent upstairs chatting and watching the other runs.
Just a great time.