If they are staying a week at Bonnet Creek than a rental will be best from the airport as it will be more cost efficient. They need a way back after the additional week.
Not necessarily. I've been able to rent at WDW at a lower cost than at the airport, and that was with a one-way rental, returning the car at the airport.
I have to admit when comparing rates for the airport and onsite the cost was much higher onsite. It went even higher if I wanted to return the car at the airport.
I believe you, but that was your experience. The OP may have the same experience or may find the renting at (or near) WDW is the same price or less.
If you are checking out the fourth day have your dh check in with ME with a flight itinerary 3 hrs after he wants to be picked up as was stated.
It is not necessary to pick a fake flight. If, after considering other options more convenient to WDW, he still wants to rent at MCO and drive back to WDW, he only needs to tell DME the approximate time he wants to leave POFQ when making his DME reservation. There are normally two pick-up times at each resort each hour (if there is demand), and he'll be assigned to the closest pick-up to his request.
Try playing with reservations or call the rental you desire. Most will match online codes or use with
AAA.
Yes, the trick to is try different car rental companies (at various different locations on or near WDW property), different rate codes, and different coupon codes. If he works for a corporation that has contracted rates with one of more rental car companies and if employees are allowed to use the codes for personal travel, that can be the best option.
I have not heard of people being successful asking rental car companies to "match" rate codes from other rental car companies, but perhaps I'm just not familiar with this practice.