When you say no mailed, however, is that permanent?
Because if not I'd think there'd be some potential for a local to do relatively nicely without so much running around and maintaining coin in everywhere by making one visit, playing sufficient coin in on that one visit to generate the max offer, and not returning until those offers are received. Maintain coin in there for a month or two using those offers, then run them off until they stop coming. Repeat cycle again in a couple months. So at any time you'd have offers you were working and maintaining, offers you were running off, and places with no offers that you're avoiding. IDK maybe I'm overestimating how many places are separately available for FP offers in the Vegas area. I've done this with local places - run out offers doing crazy things like $300 FP at $1 or less a spin, then when they quit not gone back for months, then as soon as I've gone back and played some offers start rolling in again.