[Nimbus]

First thing to point out - at the moment you can only park hop after 2pm each day. Just thought I'd point that out.

Next, there is free transport between all of the parks. So you can travel between the parks without spending any money. It might be slightly quicker or more convenient to get an Uber/Lyft but it's not necessary. So park hopping is reasonably simple.

Here are some suggestions:

Epcot - Magic Kingdom: You can park hop between these two parks using Disney's monorail. You do have to change at the Transport and Ticket Centre (TTC) though. The monorail is like a ride in itself.

Epcot - Hollywood Studios: Lots of options here. From/to the back entrance of Epcot (International Gateway) you can get to/from Hollywood Studios either by Skyliner, by boat, or by walking via the Boardwalk area.

AK: This is the only park that doesn't have any alternative methods of transportation to get to it and it's a bit further away from the other parks. You'll need to get a bus from one of the other parks to AK.