Going to SD next week with my better half for a medical conference that she is attending. Will be staying at Sheraton marina, no car, will of course rent a bike. The challenge will be to make good use of the time spent waiting for her to go to classes and such for 2 hours at a time off and on during the day which will limit my range. Bike shops, hangouts, galleries, etc within 5-10 miles? Any suggestions greatly appreciated.