Marlins travel to Colorado, and Washington going to Cincinnati after this. Marlins will probably want to finish this one, especially with runner on 2nd. Every game counts in a pennant race. Washington could probably care less. It is pretty much up to the teams whether they want to wait it out.
My thought is that they won't wait forever to play it. You can't really look at the weather map either, because South Florida summer rains come out of nowhere; you can't really look at the radar and tell whether it will rain or not.