Welcome to the forum, as P1M says, search through the place and you'll find ALL questions answered and more.

I have fond memories of San Antonio, I was there for a church convention a few years ago, just near the Riverwalk. Nice place!
Sadly, I was there BK (before Kilts) so I can't say how being kilted would be there, no problem I would guess, like cities all around the world - full of ....interesting..people, who would object to a well dressed man in a kilt?