Ok, so heres the situation. My aunt runs an event planning business and is always finding venues. One of her venues is in the city (NYC) on a rooftop. But not a skyscraper thing. It's a shorter building in between others (below 300 ft). She would like me to get a good shot of the roof from high up (video and pictures) Especially a 90 degree shot pointing straight down. I told her I would need to look at the area to see if its even possible to do so (how crowded the location is, etc etc) *IF* it's a possibility, should I use ATTI mode so GPS doesnt freak out around the buildings?