Carriers generally want to keep airport costs down - even things that aren't carrier-related because U.S. airports have a single fin ops statement. Raise parking fees for vehicles and lower air carrier passenger charges. (Yes, there are examples of this.) There are some infamous examples in the last 20 years: Southwest threatening to leave SEA for Boeing Field, Alaska delaying the expansion of SEA Intl Arrivals that's now underway... Square footage and improvements to airport access seem to come in big, slow increments but I like a variety of concessions and a high level of cleanliness, too.

I don't know that an extra $5/passenger is going to cause a family to skip MCO in favor of vacationing in Fort Lauderdale but I do expect DL would fight an extra $5 in passenger charges vs. its primary competition at MCO.

Finally, MCO is a big airport. In domestic O&D it's as big as ATL; bigger than BOS/EWR/SEA/DFW. In general, passenger satisfaction scores are higher at mid-size airports than large airports. (People concede frequency and # of non-stop destinations for less hassle/shorter walks.) If the OP is headed for the east side of Orlando and is already connecting xxx-xxx-MCO he might try flying into DAB.