I had to rent a bike for a sprint triathlon. I decided to rent because I was coming from out of town and did not want the hassle.
I had put my reservation in online and the bike was ready for me when I got there. The young man checking me in have me some great pointers. He also had me go outside for a test ride. He then made adjustments to the seat and gave even more pointers for acclimating myself to bike.
All of that was great as the bicycle community intimidates me. They made the process super easy and made me feel very welcome. Highly recommended.