Disnee Dad Says.....................................
We always get park hopper tickets, and their have been a couple timee where we just did one park. Park hoppers give you the option to switch, it doesn't force you!
More importantly is your comment about being lost in the parks. Being a first timer is no excuse. Before our first trip we made up game plans about what park, what day, in what general order.
Read the tips here and some plans together.
Here is a quick one for MK, you can fill in the details.
Be at the castle for rope drop. At rope drop head straight for Dumbo, then do the rest of Fantasyland clockwise or counterclockwise then do the rides in order as they are on your clock. you can do all of Fantasyland in an hour.
These rides will have LONG lines later in the day.
Head to Tommorrowland, get FP's, and ride what you can.
Have lunch or head back for a swim,or stay and FP Haunted, see Hall of Presidents.
Be back at 2:30 to line up for the 3:00 parade. Be at the very start of the parade, near Splash Mountian, I mean the first 100 feet! Line up on the Pirates side of the parade route, NOT the Splash side. Make sure you get FP's for Splash before the parade. The second the parade is over turn around and head straight for Alladin, then Jungle Book, then Pirates. The parade is over for you, but it continues all around the part cutting off 80% of the park from the area you are in. You will be able to do these rides with a very short wait.
Pat yourself for a job well done and hop over to EPCOT, you'll be there by 5:00 if your Splah FP doesn't hold you up.
This is just a general idea, but you get the idea. Do this for each of your park days. And know what is not important, you can't see it all in four days.