Thanks again for the input. I feel like I have a lot to learn. I have read a ton in various threads about promos. I signed up for a new member promo that was linked in my welcome email. It offers 50% bonus starting with second stay, until October. I should score well with this. What other promos should I sign up for? I had problems years ago with hilton. Seems like the latest promo I signed up for killed all other promos - I don't want to do that! With airlines, it seems you sign up for everything you possibly can.

How will the 50% be figured in light of the 50% platinum I already get? Will either of these apply to 2nd/3rd rooms I pay for?