NAC: San Diego Listers?

[Mark L. Chang]

The wife is in San Diego at a conference for the week. She would like 
some pointers on neat things to do that aren't super-expensive (which is 
what the conceirge keeps suggesting).

She is in what we think is a tourist section of town at the San Diego 
Marriott Hotel & Marina (apparently 2 miles from San Diego airport).

Questions:
  * What the heck is there to do there that doesn't require a car, or is 
otherwise accessible by taxi?
  * What is this "Corto" island? She's only heard it mentioned, so we 
have no idea how to spell it. Car-necessary? Hard to get to?
  * Which in the bazillion restaurants in the Seaport village (right by 
the hotel) are actually decent to eat at? The ones she has tried have 
downright sucked.

Thanks, and sorry for the NAC. Email me PRIVATE please.

Mark