It can depend on WHEN those particular 2 hours are. For instance, most "weekend" rates require a pickup sometime between noon on Thursday and midnight on Saturday; if you are not inside that window you will not get the rate. There are other special leisure rates that have similar restrictions; check the rules for the rate code that you are using.
If the situation is that you cannot pick up the vehicle until noon, then what I would suggest is eating an early lunch at MCO and taking your time over it, then be at the rental kiosk/counter at exactly noon.