Tournaments are open to everyone. Just to give you a view of what you need to shoot to stay ahead .... I've tracked the 500+ RG's I have played (yeah I know ... no life here). Here are the results.
You'll note they other folks were right on as far as St. A, Kia Front and BP Back ... 34 works to stay just a touch ahead of even. Kia back you need a 33. For the 18 hole tourneys a 68 will keep you ahead in credits. This is all net the entry fee --- Green ahead - Red behind.
Not making a bunch but ... hey they're fun to do.