I'll be in Mexico City, specifically "el centro" next week. Any comments, suggestions, photos, etc. you'd like to share? I'll take my M6, 35, 90, and a Voigtlander w/25, 15 lenses, shooting Kodaz B/W - C-41 and Kodax 800 color print. I'll be careful, I know it can get hairy. Should I bring my HOLGA?