The Admiral's Club in PTY is small and basic, but it's a fine place to spend an hour or so.

If you have an early flight to MIA, don't expect there to be a lot of food available in the club - both times I've been there early in the morning waiting for a MIA flight the food has been a few small muffins and that's about it.

In my experience, the lounge hasn't been very crowded, and thus has been very quiet.