Important to note in case you plan on travelling, that the US is also requiring a negative test prior to travel. From another poster on a different thread, it's $199 in Ontario at Shopper's.
Then when you return, you must have a negative PCR test, as they will not accept just a Rapid test. I haven't been able to find any info to confirm if the PCR test is free at the Disney/Maingate test site, but going to a private test location in Orlando looks like it will cost you another almost $200 USD.
I totally agree with testing being required by both countries, and I have a trip booked for December, but if this requirement is still in place then, I'd be cancelling my trip. For just 2 people to travel, you're looking at $800 out of pocket for testing!