Vellamint, I think you took my comment about the cart the wrong way. I am sorry if you did. I was commenting more on the fact that after paying 5.00 to rent a cart for a few minutes and getting a .25 refund was absurd. I personally think that the whole cart deal is a total rip off. I would much rather pay a porter, a live human being trying to earn a living, than pay someone that makes a HUGE amount of money daily for ripping people off. As to your comment about returning shopping carts, I do also, or leave them in one of those "collection" areas in the parking lot. BUT, in this case, those carts are left and many people appreciate them being left as they use them to take their luggage back into the airport. Or.....some employee of one of the rental companies make a little extra money. Sort of a "pay it forward" type of thing. Again, I do apologize.
The toll roads in the Orlando area are manned, with the exception of exit 7 on the 417. That one is exact change. The sun pass program for renters is covered pretty well here.
https://www.sunpass.com/rentalcar
You make a great case for using ME. I have used it once and really liked it.