I know I used flash on some of them, but I don't remember which ones without looking at the exif info (for faster shutter speed). Hmmm...let's see here (as she opens up LR to take a look)...
Tropicana sign--I believe that I did use flash as the shutter speed is 1/125 sec. BTW, I don't know for sure how the orange and "Pure Premium" is lit up, but my best guess would be florescent.
Roof sign--1/15 sec.
Loverboy--1/25 sec.
ISO on all pics- 400 (I was afraid to take it beyond that for fear of too much noise).
Thanks for all the positive buzz.
Heather