Thank you all for the responses.

Update: I called RJ. On the positive, they said that our bags are checked through and we would not need to claim and recheck in AMM. The RJ reps (2) I spoke with both said 30 min at AMM is not sufficient. Unfortunately my only flight option is now an 8:30am flight from AQJ to AMM. There are no other flights mid day. Its not about availability, there are actually no other flights. So, we now have an 8.5 hour layover in AMM for a 1.5 hour flight from AMM to LCA. A bit of a waste of a day of vacation. RJ changed other flight times after we booked as well, which have resulted in other longer layovers on different legs of our trip.

We will have already visited AMM at this point, so I will be looking for some way to spend 8.5 hours that is useful (maybe a hotel pool somewhere?). Suggestions are welcome and appreciated!