I booked WOC dessert party online, noting the gluten allergy when I did so. Then I called a couple weeks prior to our trip and talked to a CM to make sure all of our reservations had his allergy clearly noted. The CM went through everything, and we chatted about how WOC food works. Then two days prior to our booked WOC date - a CM called to confirm the allergy and discuss the food options. I assume this is because they plan out the food restricted plates the day prior, so they want to make sure you're still planning to keep the res before they do that. I was very specific that DH would rather have more fruit and savories than sweets, and she noted all of that - and that may be why he got a ton of fruit but not as many desserts. His plate had the same cheeses and grapes as the regular plates, and he got his own bread. None of the sweets appearing on the regular plates were ok for him, so he had blueberries, strawberries, blackberries, and raspberries with a sweet yogurt dip, a chocolate-dipped strawberry, and some kind of tart (looked like a shortbread-ish base, with chocolate and berries). There was a lot of fruit on that plate; it was abundant, and he is a BIG eater but agrees. I neglected to snap a photo. They knew exactly which plate was his, no confusion, had some kind of label on it.
I think if you are more into sweets and are clear about that - your plate would potentially be different. Knowing about the cheese/bread/fruit parts in advance, we were treating this like a late dinner (rather than spending a ton on the party and only eating half of the food), and that's why I communicated DH's savories/fruit preference to the CM 2 days prior. For any normal-appetite person, it was enough for a meal. I don't know if their hot cocoa is ok b/c DH only had the sparkling wine and coffee, so you might want to check that part if it's something you want.