Join Date: Jul 2002
Location: Still going through ORD security when boarding has already started
Programs: AA EXP, UA Silver, HH Gold, Bonvoy Gold, IHG Plat, Hyatt Disco, Reno Air MEGA Platinum
Posts: 10,307
737 and A321 definitely have a changing table that folds down from the wall - at least in forward lav.
Not sure about MAX-8 though.