We use
Walmart they have more of the stuff we are use to.
Amazon prime now is nice in a pinch they deliver in an hour or the next even 2 hour block, you dont have to have a reservation so that is nice.
We did Walmart twice last time once I did grocery pick up where we went there and they brought it out and the second delivered.
Walmart - Use the code FASTCAR and you can get one free delivery normally 9.99 (Doordash is the delivery service)
Our must haves are stuff we need in the room late night snacks such as granola bars or chex mix
water bottles and my kids like the kool aid sticks for the bottles
We always get a small meal or two like mac and cheese cups or ravioli cups. My kids are really hungry in the room I guess its all the walking the do or that they are not being entertained.