Montego Bay after excursion - time?

We booked a zipline adventure for our family of 4 while in Jamaica through the cruise line. The day in port is 8am - 5pm, and the excursion is 11am-3pm. The excursion details says "on the way back, you can choose to be dropped of at Margaritaville."

Is this even doable? If the excursion says it ends at 3pm, is that the time you are dropped back off at the ship or when they gather everyone up to take them back? It seems they wouldn't offer a drop off at Margaritaville if there was not enough time for a snack and beverage and to get back to ship in time.

If there IS enough time however, do we then have to rely on catching a cab? Can we get the HOHO from there or do we have to pay for it before we leave?

Thanks for any advice.

IMHO, that seems like you are really pushing the time line to get back on board. My experience has always been that the ship expects you back on board NLT 1 hour prior to scheduled departure.