Yes. We are gluten free and you just need to let them know when you make the reservation. Actually, when we did it, I somehow left it out of our reservation request-- so when we got up to the podium to be seated and mentioned it, they started scrambling. I felt bad because it was really my fault for not double checking my reservation request. But they came through beautifully. They offered us creme brulee first, and we kind of balked; then they offered to just give us the usual plate which we could pick through for what we could eat (the macaron and the rice krispie treat, I believe, were safe-- not sure what's on there now). Then they gave us an additional plate of extra fruit and cheese. It was great.
I should also note that this was just DH and I--- and while our daughters are celiac, we are just kind of sensitive, and cross-contamination doesn't generally affect us. So we were pretty safe with picking through the regular offerings, though that wouldn't work for the very sensitive.
Also, another vote for the dessert party. I've done both Wine Country Trattoria dining package and the dessert party, and hands down the dessert party is worth it. You have a guaranteed good view with much less wait, no standing, and snacks. With the dining package, you still have to line up 90 minutes early to get a good spot, you have to sit and wait forever, then stand and wait forever, squished like sardines. Then, unless you managed to get right at the railing, you could still lose your view when the tall person steps in front of you or hoists their toddler on their shoulders.