Hi Bones, Casa de Bandini(Old Town San Diego, for that matter) is about 2 mi due north from the convention center as the crow flies, but is relatively complicated to get to. However, it is a fairly familiar tourista spot, so any cab driver ought to know about it.
This may not be my place to suggest, but it seems like an idea worth proffering: How about if the Boneses cab it to Old Town, then would Igor's services for carpooling be available from there to the park, and [word invention] whereverafter [/word invention]?
Cool! We look forward to adding your distinctiveness to the collective...................uh, I mean, meeting you
............yeah, that's it, meeting you.