My advice would be to avoid the Vegas shit show experience and go to an event with feeder series races.
Watching events in person is nothing like watching them from home. There is a lot of downtime when F1 is the only series racing. If the venue is interesting (imo Vegas isn't) then you can wander around and explore a bit but in a place like Vegas it's going to be a lot of sitting around, and they've already shown they don't care about the fan experience.
I'm sure there's fun to be had at any F1 event but Vegas wouldn't be my first choice, or even on the list.