I thought American required check-in at least 90 minutes prior, as in bags checked/boarding passes issued. Am I understanding American is denying boarding (as in physically getting on the plane) as well? To not let someone board if they are at the gate on time makes no sense. (Yes I know, we are talking about the STT airport here....)

We are flying thru SJU this trip (to VG) so I don't need to be concerned this time, just thinking about our next trip.

We have been using the STT airport for 20+ years and there are times where it is an absolute zoo. We always use a porter and that doesn't even assure quick passage anymore.