Parking (including over-height vehicles)
This list isn't necessarily in priority order. For instance, light rail trains always catch my eye, but I rarely am looking for things to do other than attend the convention; however, I know there seem to be people who want to have lots of reasons to get away from the convention hotel.
What we don't have downtown, and what I wish we had, was a 24-hour restaurant. During ConJose, there were several nights that I got finished so late that the only thing I had to eat was the food from the gift basket the Fairmont and the SJCVB had given me (and Tom) as co-chairs of the convention.
While out on my walk, I found that one of my favorite downtown quick eateries, Ravioli's, has closed. During ConJose, Lisa and I ate there so many times that we filled up a buy-ten-meals-get-one-free card. And by a strange cooincidence, the man who was managing that Ravioli's at ConJose was behind the counter at a Corner Bakery we visited during Denvention Three, and remembered me and Lisa specifically was well as Worldcon generally.
So after spending a day putting many thousands of Standlees on my pedometer (>10K steps Saturday for certain), where did I go to eat? Well, I'm mildly embarrassed to admit to getting chicken and red beans and rice from Popeye's. I'm by myself and it's cheap and fast, and I like their chicken. Besides, I wanted to be done before 6 PM so I could get out of the parking lot before they started charging for parking again.