I'm passing this information on, not as a way to stir controversy (re: travelling this summer) but it's the info I have found hard to research, so I wanted to pass it along to others:
My family and I are still planning to go in July (yay!). There is a clinic in Waterloo that does travel testing for $60/each before leaving. It is a bit of a drive for us, but worth it save a buttload of money over our local $200/each travel test. Once at Disney, there is a FREE place to take a PCR test at Maingate that I have already signed up for and am ready to go with our barcodes. We just have to Uber to get there. Back-up plan if that doesn't work is there is testing at MCO airport for a (hefty) fee, but I like there is a back-up plan. We are flying back to Buffalo and have booked a limousine straight to our home for our 2-week quarantine. We're going with Covid Insurance (should we get stuck there) and lots of excitement. Hope this info helps somebody else.