Depending on the time of year and the hours the parks are open, maybe. It's easy enough to do both Epcot and AK in one day and ride every ride there.
There is a lot of entertainment in Epcot, just about every country has some sort of something going on so it might not be possible to ride every ride and see all of them but riding every ride, easy.
AK can have long lines for the rides in Pandora and tends to close earlier than the other parks but it's possible to ride all the rides there and stop and watch some of the entertainment. You really shouldn't need Genie+ for either of those so I wouldn't buy it in advance of the trip unless you plan on having hoppers and can use it at night at another park.
HS can be tricky, it has a lot of E ticket rides that can have long lines and RoTR is almost guaranteed to either go completely down or have parts of it go down on any given day. Even with Genie+ there is a chance you'd be stuck in a line for it if it goes down, not as long as you would be without it but still. There are currently 2 shows running at HS, but they do have the little parades and depending on when you are going, Fantasmic is starting again at some point.
MK has a lot of rides, if you are planning on doing them all it's possible to ride all the rides, watch the parade and see the stage show and live to tell the tale without Genie+. If you don't intend to ride the kids rides or spend a lot of time in Fantasyland, it's easy enough to hit the big ones (the three mountains, Pirates, Jungle Cruise, HM) and then maybe hit some of the smaller ones (SDMT might be hard) like Peter Pan, Pooh, Small World, Under the Sea as well, even without Genie +. Not sure you would be able to do all that and see the parades, shows and fireworks but MK is opening earlier and staying open later this spring and I'm going to assume into the summer.
Keep in mind, if you just about any time other than Dec - say March, it is going to rain, it is going to storm and some of the outside rides like TT at Epcot, SDD at HS, EE at AK and Splash, BTMRR and SDMT at MK will shut down if there is lightening within a certain distance.
You would most likely have to do park open to park close at MK and HS and still might not get everything done at MK if you want to take an entire day off. We tend to not take a full day off, we just go back to the resort mid-day and go to the pool for a few hours and always have hoppers, which seems to help. I will say, I have been going to WDW since 1983 and there are still some rides I haven't ridden (my son wasn't a fan of the kids rides even when he was a kid) and some things I haven't experienced and there have been years I've gone 3 times a year.