The chicken tenders are gluten, egg, and soy free. The french fries have soy. I'm not sure if it's full soy or just lecithin or if your DS can have lecithin or not. Hopefully somebody else will know more details about the soy in the fries. We're not soy free but chefs have mentioned it to me because one of my kids can't have most soy products but that's due to a different ingredient and not the soy (chefs sometimes get into discussions with me over that one because they like to err on the side of caution but they're safe for her because I know she can have soy). I would definitely discuss lecithin with his doctor to find out if he can have it or not.
The Mickey waffles can be made gluten, egg, and soy free.
You didn't ask, but the Enjoy Life products (mosly cookies but a few places have chocolate bars) found around the parks and resorts are safe as are all the Babycakes products. Resorts should all have Pacific brand rice milk available though you'll have to ask a chef for it as it won't be in the coolers. A few TS restaurants in the parks will have it as well though not all will. Those that make milkshakes seem to have it (my kids can't use the brand of soy milk used at WDW but they've gotten milkshakes using the rice milk). The ice cream parlours in the parks as well as most resorts have Rice Dream ice cream as well.