The full La Guardia experience needs to be completed with the M60 bus to 125th station in the rain at night. Now you are living.
It is actually faster the get to mid town with the AirTrain and the E or A
Travel Tips - what works for me
Airports - be comfortable, take your own food, https://flightaware.com/ If you need to rebook, any gate agent with your airline can help - you don't need to wait in line at your gate
Entertaining - if you are in sales and you have to entertain so be it. That said, casual hanging out...fuck that. Every industry in and situation is different but generally, there is no benefit to going to every lunch, happy hour and dinner has no benefit.
Health - stretching/yoga, going on walks, good food, moderated booze, sleep etc. It is really easy to let this get away from you.
Beginning/end of trips - try to leave with shit in order and have something to do when you get home. For example, if you get home Friday night, do what ever is needed to make Saturday your day to forget about work. Not sleeping in, hangover, laundry bullshit.