Just wanted to update on the rentals I've managed to find, these were the cheapest so far (even using thrifty and costco travel) and are for National:
Pick up on the EA at MCO 9/20 and drop off 9/21 at Cape Canaveral: $47.82 using contract code XZ53043 with no one way drop fee. P/U and D/O time was 0900. (Going on a 7 day on the Fantasy, spending the night at BLT)
Pick up a Premium at Cape Canaveral 9/28 0900 and drop off MCO 9/29 1700 (Coming back from the 7 day on the Fantasy with one night over at AKV): $90.59 using contract code XZ53043. Drops to $45.29 if I'm willing to drop off at CC Center or Dolphin that morning at 0900. Not flying out until late, like 6-7pm so dropping at MCO involves an extra day charge that dropping on property would not because we can take the ME back to the airport.
For the above two I played around using SWA code, the Emerald Club code, the KLM code, the above code, and one more. I believe the SWA code stipulates same drop off/pick up location, so it incorporated a $250 drop off fee. KLM I believe was about $10ish dollars more- but it's handy if you need underage/insurance I'm thinking. The EC contract code was the most expensive outside of the SWA code.
Either way, the above or the KLM code will be cheaper than
DCL transportation, (and even private transfers since there are only two of us), and we should still get to the National office in plenty of time to shuttle back to port and try our hand at an upgrade.
Lastly, for those going to the 13 Reflections of Evil Pin/Vinyl event, picking up 0900 9/12 on the EA at MCO and dropping off at the Dolphin at 0900 on 9/15 $136.43. (We are staying at the BCV so this was SUPER convienant- just walk back and forth to the Dolphin) This was also using contract code XZ53043.
Comparatively, the cheapest rate I could get through thrifty (involving MCO R/T) was about $80- $100 more. Even if the rate doesn't drop, I'm okay with this one. I figure it will drop though if National releases another free weekend day or $X off weekend day code as it involves a Saturday overnight.
Hope this helps at least one other person!!