It's a great scene to get into. The band you've joined definitely sounds like the right move for you - any good band knows not to undersell themselves to get a gig. After all, once you're known as a high-end band that doesn't mess about, then those are the bookings you'll attract.
A few tips? Hmm
1. Crowd enjoyment is key, but enjoyment of the manager/person who booked you is even more so! Of course, if the crowd loves you, this does help influence his/her opinion of you too when he books acts in the future.
2. Always confirm before the gig how long you're playing for and start/finish times, so to avoid disputes at the end of the night.
3. To be early is to be on time, to be on time is to be late, to be late is to not turn up at all!
Will probably think of a few more before the end of the day, but until that, best of luck with the band and enjoy yourself!
Danny