The ear scouts videos someone posted above are good to help you plan out your strategy.
When we went in April (week after Easter) I was so stressed about Genie, how much extra it would cost (we're Canadian, so factoring in the exchange ...

), but we only ended up using it one day out of 7 for HS and I found it to be a pain, and we didn't really need it.
With the extra 1/2 hour each morning, get in your must do's. Try for virtual que for Guardians and Tron at 7 am. If you don't get it, don't worry - the 1 pm drop seems to last longer so you should be able to get it then.
In MK, adventure land doesn't open for EE, so after EE, head right over there to get in your top rides. Ear scout videos will help you determine which order to do them in. If you stay all day, take in the shows, parades, the low wait rides. We took a break around 1:30 and came back at 6 to do Tron (we got 1 pm virtual que), shop, watch fireworks and jump on rides after fireworks, Mine Train just before close. We felt we got in all our must do's that day.
For Epcot, most of the bloggers say Genie + isn't worth it. Again, utilize early entry for your must do's. Test Track single rider is an option. You should have no problem getting a VQ for Guardians at 1 if you don't get in on the 7 am drop. I'm not a fan of Remy, in fact I thought it was a waste of time and steps power walking there for Early Entry.. lol. But some people love it. When we take our grandkids in January I'm not even telling them it's there unless we miraculously hit a low wait time when we're near it. Ha Ha. We have 9 on the next trip that we are paying for, so we'll be doing the parks without Genie Plus or ILL.
Good luck. Report back how your days went without it!