There are a number of shuttle services to Sky Harbor Airport in Phoenix. Make reservations in advance and allow about 3-4 hours before your flight time. Check the yellow pages for company phone numbers. There are several taxi companies in Tucson. Check the yellow pages of the phone book.
Most supermarkets also have inside the store a bakery and a pharmacy.
Many supermarkets now offer other services such as a bank, post office and video store inside the supermarket. Self-service is the rule in grocery stores, which means that you take a cart or basket, select the items you wish and present them for payment at a cashier's counter. Large supermarkets in Tucson are Basha's Trader Joe's, ABCO, Frys, Smiths, Safeway, and Albertson's. Save your cash register receipts. The nearest large grocery stores are Safeway at Campbell and Broadway and Fry's at Grant and 1st Ave.