if the op books this as an event (with a contract) he will get 3points/$ for all the rooms and the additional expenses up to 50,000 points and 10 nights towards status that don't count towards promotions.
Notes/ideas:
1. Pay with a marriott visa to get an additional 5points/$ and a night towards status for each $3000.
2. If you intend to spend more than $17,000 it pays off to talk to the hotel and book two events, so your accrual isn't capped.
3. Check the events page on marriott.com - they run promotions periodically for double points.
Congratulations for your wedding and best wishes for a happy life with your partner!!
