We will be staying downtown in SD and might want to spend a day at the beach. I think I read somewhere that we can take a ferry to Coronado, is that correct? And if so, can we visit the beach by the Del Coronado, or is there another beach? Would we be better off going to another beach, like the one with the amusement park (we wouldn't ride the roller coaster, and we are going to DL after SD, so rides are not a priority)? We mostly would just want to visit the beach, hang out, eat lunch, maybe look for shells (?) or something. Any ideas would be greatly appreciated.