Piglet's Mom,
You can take them to Wal*Mart or carry them on the plane in your carry on baggage.
Not all Walgreen's throw magenta or cyan or yellow, depends on the chemicals and the film brand you use. IE

olaroid throws tons of blue, it is a nightmare and a PITA to adjust. Kodak throws terrible yellow when taken under flourescent lights. IMHO, the nicest film to work with is Fuji.
I really don't like to paint the kids working at Wal*Mart with the same broad brush, there are some that are really good. Regardless of the age, they have to be trained, and the training at Wal*Mart can be really bad. But, on the whole, they are pretty good. I had more problems training adults than kids.
Sam's Club uses the same machines that Wal*Mart uses (they are the same company). All Wal*Mart/Sam's use Fuji machines with Fuji chemicals and Fuji Lustre finish paper. They have different models. In fact Kissimmee uses two different model machines. The 370 is the best, IMHO, and gives the best prints. If you use
WalMart ask that they print using the 370.
Again, if you are edgy about having your film processed in Orlando, bring it home. They will hand check your film if you hand it to them. You will not need to worry about the scanners.
The real problem comes when you put it in your checked luggage. Also, don't subject it to temp. changes. Heat really does a number on the film.