Jamaicajeanne....it's a guide for tourism! The Tourism Ministry spent countless hours, days etc. writing out protocols for the tourism industry. It's not a guide for how to handle Jamaica citizens. Vehicle rentals are addressed in the Covid-19 Tourism Protocols.
As far as getting approval immediately after applying for the Travel Authorization...you only get a positive, immediate response if you answer correctly and comply with their stated protocols. I see it as an improvement...not something negative.
The DRMs (Disaster Risk Management amendments) state every new rule as well as exactly where you can go...they've amended the original Resilient Corridor to having 3, including the south coast. Sometimes there's confusion with updates on the various and separate websites because this is an incredibly fluid situation. Nothing like this has happened before. It can be frustrating...but so are the times we're in!!