My experience from other global destinations is that GE is for immigration, but one still has to pick up their bag and clear customs. Question is whether or not STT has an airside connection so that I don't have to exit the secure area.

Or, if I at least I can clear customs, drop my bag airside (for continuing flight) so that I don't have to stand in line to check bags.

Redcoats are basically fastpasses, IIRC, and if one has Global Entry, you don't need to redcoats. But I'm open to all suggestions.

It's just frustrating that this airport is so hard to navigate, but SJU is, at least to me, MUCH easier.