There are a lot of sessions that say no F18's, jets, military planes, etc., but there are also several really good, professional-level ATC sessions and others that will welcome the hornet as long as you what you're doing in the environment, or if learning, are polite and do your best.
I've learned a lot from the pilots who are flying 737's, etc. and the ATC's. A good ATC makes for a fun session if you enjoy learning real flight procedures, navigation, IFR flying, ILS landing, etc.
