So glad you enjoyed Kingston!!
We love Kingston and visit if not every month, but at least every second month (work & pleasure)...the city is wonderfully vibrant.
If you're driving yourself around as we do...there is an element of "hassle or hustle" that happens at the traffic lights that is huge annoyance and topic to many Kingstonians...just a different kind of harassment.

I'm not sure what you mean by more authentic...but I don't think having a TGI Fridays makes it more Jamaican (ha ha).
Seriously, glad you enjoyed it and that you'll be going back...definitely a different vacation from the rest of the island.