We had two experiences with GF at the dessert party.
The 1st was back in 2012 and DH got a huge plate filled with great GF items. A great sorbet, cookies, a flour-less chocolate cake etc. He was beyond happy
Second time was just last month and there was far less for him. He got a prepackage cookie, blackberries/raspberries, and one other item that wasn't prepackage (I'm blanking on it, but it was a baked item)
I will say the big difference *might* have been a communication issue. When they brought out his platter they first asked who it was at the table that had the nut allergy. DH doesn't have a nut allergy, only gluten. So I left wondering if I had checked the wrong box on the food allergy, did they possibly give him the wrong plate? I'm not sure, but when we corrected the manager and said that there wasn't a nut allergy, but he was GF he nodded and handed him the plate.