I'm considering playing hidden-city in DTW next week. I'll be flying CDG-DTW-BOS, but may just get off at DTW in order to visit some friends in TOL.

I've never tried this internationally or with checked luggage, but I know there are some airports where you have to check your luggage back in after clearing customs even if you're at your final destination.

So—can I retrieve my bags to clear customs in DTW and just hold on to them? (I'll be arriving on AF so I'll be in the McNamara Terminal.) Or will I be forced to recheck them?

Thanks.