The OP is referring to Garden Grove at the Swan, which is not family style - I think you are referring to Garden Grill in EP.
OP, I would call the Swan or even post this on the Swan/Dolphin resorts thread - the last time I went to Garden Grove (pre-covid) they were no longer taking reservations and it used to be an a la carte menu + buffet (you could do either or both, similar to the current Ale & Compass set-up)