2:45pm landing to rental car to pitstop/check-in enough time to get to 6:15 pm ADR in DS? TIA
Arrival time SHOULD be to the Gate.
So, let's say 30 minutes to get off the plane, pitstop and get to the main portion of the terminal.
Do you need to collect checked luggage? If so,
budget 30 minutes there.
Do you need to hit the counter or straight to the car? Budget at least 30 minutes if you have to do the counter.
Say 45 minutes to drive from MCO to DS (should be 30, but allow for some extra).
So, if everything goes "right", you're looking at about 2:15. That should put you at DS at 5pm. And you can save some time if you don't have checked luggage and can skip the rental car counter.
BUT, as mentioned, what if your plane is late? What if there's a thunderstorm and the ramp workers need to go inside. That's not just about unloading bags, but they need to guide the plane in to the gate.
If this was an ADR that doesn't cost anything if I miss it, sure, should be doable.
If this was an ADR that has a penalty for missing it, nope, not on arrival day.