A FlyerTalk Posting Legend
Join Date: Jul 2002
Location: MCI
Programs: AA Gold 1MM, AS MVP, UA Silver, WN A-List, Marriott LT Titanium, HH Diamond
Posts: 53,012
I continue to be able to book in the app without needing to populate the number.
As for the website, are we sure it's not just the browser auto-populating the field? That is it's actually Marriott that has saved the number and won't ask again, even if I log in via a device I've never used before?