Five guys has a fryer only for fries, and vanilla milkshakes have low to no risk of cross contamination as nothing needs to be mixed in. I enjoyed both of those without having a reaction, but decided to not get a burger as it didn’t look like they were cautious about cross contamination (at least while I was there). I know other locations are typically good about that, so take it with a grain of salt
Went to the water park in mall and there are NO food options at all!! They didn’t care that I brought food in but luckily I had bc my daughter would’ve had nothing. I asked about fries and they said nope. All cooked and fried in one thing. Walking around mall at kiosks and fast food I saw nothing either.