Security was a breeze, maybe because it is a Tuesday afternoon, but it only took 20 min from sig. at MGM to actual terminal. Very efficient airport. My advice , fly mid week.
A layover where you don't exit the plane can be a money saver vs. a terminal layover. Play the odds. Roll the dice. NB: The House always wins, in the long run.
Rental car situation is nightmarish. Nothing onsite. Shuttles take up to 30 minutes+ and the actual lot is nowhere near the airport. It took just shy of 1 hour to drop off car and get to security.
Do whatever you can to have your boarding pass printed before you get there if you fly Delta, check-in lines and security are bananas. If you're running late, tell them, they'll rush you at check-in.
I just watched a girl running through the terminal trip, fall down, throw up, start crying, then start running again. Sometimes you're lucky to live through this town