My Husband and I will be staying 3 nights at the Coronado Marriott In June. Do we need to rent a car or can we walk most places? We are going to a baseball game one night and would like to get over to the area around the zoo. Also wanted to check out old towne but can't really tell how far everything is. I also want to go to La Jolla one day which I know we can't walk to. What would be the best way of getting there? Really don't want to rent a car but would like to know if it's going to be a pain if we don't. Thanks for your help!