Here's a scenario for you

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My sister and I are planning our October trip for our families. We are two families of 4 and the kids will be 11, 9, 6 and 2 (almost 3) when we travel. We both have the SWA Visa cards and we will each be able to cover 3 R/T tickets and one O/W ticket with our points.
So, I was thinking....if the schedules align, we are thinking about sending the guys to Sanford on Allegiant. Then, we would have them rent a car and stop for groceries (we'd have to give them a list

) on their way to WDW. That way, DSis and I could fly with the girls and luggage, utilize DME and we would still be able to get groceries without having to use a delivery service.
My thought would be to do a one-way rental and return it to either the Dolphin or Car Care Center the next day. We'd have no use for a small car since there are 8 of us. We wouldn't need to return to the airport because we would get the guys their return tickets on SW with points.
Obviously, this plan is dependent on the flight schedules. I know that Allegiant only flies on certain days of the week and even then, there is only one flight to choose from. Right now, that flight gets to Sanford around 8pm. How late would that get us to AKV? They would not have any bags to claim. My sister thinks that she won't be able to manage "by herself" but I think she would be willing to try it if the price difference was big enough. Right now, Allegiant is about $60 cheaper (even with a carry-on bag factored in) than SWA for the same day. I know that the schedules are not out yet for October, but I figured I would try a comparison. If they split the cost of a small rental car (about $70 total, $35 each) that would still save $25 each AND it would make the groceries cheaper since we wouldn't have to make the minimum or worry about a delivery charge.