Sharon,
I can't help answer your question as I'm not a Plat - however, I think most hotels lounges are closed on weekends and I think they will give you breakfast certs, but not 100% positive. If you end up going to AMS, the Renaissance is about a block from Central Station & is a really nice hotel (with a great restaurant for a legitimate breakfast). The AMS Marriott is a little further away and will require more expensive transportation to get to & from. However, if you're doing a quick turnaround MR to AMS, there's a Courtyard right by the airport. I'm doing a MR to AMS on NW in March and I'll be staying at that property. I've stayed at the Marriott & the Renaissance & the Renaissance is by far a nicer hotel than the regular Marriott & has a better "downtown" location.