I used an uber once when my car got stranded at the Hospital so they should be available. Not sure how early tho at least for me usually i have to get labs like by 730ish in the morning. Depending on the chain I usually stay at the Holiday inn express or Camby right next door (no free breakfast there tho) near the main hospital. there are a lot of restaurants just across the street in a full size mall. Its on East Irma Lane and they have a Mayo discount. its 2 miles from the main hospital. Plus since I can't eat at buffets the attendant usually will get me my own plate from the back. a little tip helps on that. Anyway enjoy, actually a great time of the year as in the summer you get the best deals in the Phoenix area as it the off season. Wintertime all prices double.