Question about the Westin at DTW

[pilot]

I'm traveling on Wednesday 8/6 IAD-DTW-AMS, and I have a six hour layover at DTW. I've done a search and I can't find the answer to this question:

Does the Westin sell admissions to their fitness center/swimming pool to travelers without overnight accomodations? Have any of you ever spent part of your long layover at DTW at the Westin?

I'm a Delta PM and I belong to the Delta Crown Room, so I'll be able to get into the World Clubs at DTW, so I've got some place to go; but I wouldn't mind having a swim.

I couldn't get the answer to these questions on the Westin website, and their on-line "chat" was closed.