Personally, I think Yeti, RTIC, etc....are a huge waste of money, along the lines of Bob strollers. You can get a nice soft sided cooler from
Amazon or
WalMart for less than 1/2 the cost of those overpriced things and they'll do the job just as well. We have a huge soft sided cooler that we've been using for our WDW trips for at least 8 years now. I think DW got it at Wal-Mart, it's nothing fancy. It does a wonderful job and has held up to at least 150 park days. We pack that sucker full, so it's been abused quite a bit. It's finally now showing wear and is ready to be replaced, but we have definitely got our moneys' worth.
Nobody has ever touched our stuff in all the years we've taken it, and we'll leave it sitting in a stroller for hours at a time. Not saying theft doesn't happen, it does. But since we have a non-fancy cooler and non-fancy stroller, guess nobody bothers. Squirrels will get into food, but only if it's left open. Never had a squirrel get into our stuff.