Domestically, not a whole lot. Sometimes the late check-in/out is useful, sometimes you get a slightly nicer room. Internationally, or at nicer properties I ap

Domestically, not a whole lot. Sometimes the late check-in/out is useful, sometimes you get a slightly nicer room. Internationally, or at nicer properties I appreciate the lounge. Some hotels have a nice hot breakfast/dinner with booze and beers that's only available to guests with lounge access. It's convenient and cost effective if you are traveling for work and want to save some per diem.