I'm on a company-sponsored two week trip, staying at a Marriott. I'm not a frequent hotel-guest, so I've always had my Marriott Rewards earnings set to Southwest Rapid Rewards credit/points for the rare occasion I do have a stay, which generally lasts no more than one or two nights.

I suddenly realized that on this trip, that makes absolutely zero sense. With earnings set to SW RR, I'll earn a whopping 600 SWRR points for this 12 night stay. With earnings set to Marriott Rewards, I'd earn well over the 10000 MR points needed to covert to 2000 SWRR points. So with that in mind, I just now made the switch in my profile on marriott.com

Will this actually work, though? Given that I made my earnings preference change in the middle of an actual stay, what points will I earn after I check out? The points that my profile was set to when the reservation was made and the stay began? Or the points that my profile is set to when the stay ends and the balance is charged?

Thanks for your insights,
Paul