Thanks to info from this board, I made a reservation for the Blue Bayou for my daughter and I on Feb 19 at 3:40 (last lunch reservation). I had my 8th birthday lunch at the BB many moons ago, so it was extra special to be able to share the experience with my daughter.
I'd planned to share a desert only, as that's what fit our budget, and folks here indicated that it was just fine. However, when I looked at the menu before our trip, I realized that they had a really reasonably priced salmon meal on the kid's menu. I knew my daughter would enjoy that.
We arrived about 20 minutes early for our reservation, and indicated that we were happy to wait for a waterside table. Like others, we were told there'd be a fairly long wait, but were seated pretty quickly at a lovely waterside table.
The server didn't blink an eye when I told her that we were only ordering a kids' menu item and a desert after. We also shared one of the fun drinks with a light up "ice" cube that we loved. We were brought a full basket of bread to share, and even offered more, if I remember correctly, but we surely didn't need more.

My daughter shared some of her lovely (not fabulous, but quite nice) salmon meal with me, and then we ordered a desert to share. Something very chocolatey, but I can't remember what it was called.
The bill turned out to be about $28, darn close to our total daily budget of $35. (We had breakfast and lunch in the hotel, so $35 turned out to be more than enough for dinner and treats.) The fabulous server actually *scolded* me when I told her that the balance of the $35 gift card was the tip. She insisted it was too much. But, I also insisted, as we'd taken a table that would normally bring in a lot more tip money.
All in all, a delightful experience!
So grateful for all the tips that served us so well!