I think there was a F27 that dropped out at the last minute, and 2 F24s did compete. Can't imagine why you wouldn't be welcome.
Marco is a little pricey, so it requires some planning.
For this last event, the entry fee included 3 nights dockage in their marina with complimentary use of transient facilities: showers, toilets, laundry, pool, and hot tub. All of which are gorgeous and spotless. There are two bars and a restaurant. At times these may be availablte to members only. When I was there the full buffet was $30 per person, but you could get a great grouper sandwich for $10 in the bar. BTW, the bar is rich dark wood paneling in a tray ceiling.
They were offering a summer membersip for $500, not sure what that included.
This was my third trip there and I expect to attend as long as they will have me.
I think they have a web site if you're willing to do a quick search.