Hiya, Melanie, and welcome to
planDisney!
I'm very happy to report that, yes, you are more than welcome to purchase
Lightning Lane Multi Pass, Premier Pass, and Single Pass on top of each other on the same day! If this option fits your budget, it's definitely the very best way for you to take advantage of your time at the Theme Parks.
If you ask me, I think that the best park to take advantage of all three services is definitely Magic Kingdom Park. It's historically the most crowded and most popular park, so you'd be spending your money very wisely. On the other hand, I wouldn't purchase all three for Animal Kingdom, since it's usually less crowded and it has less attractions to enjoy. You can easily do it all if you only purchase Multi Pass here!
Melanie, don't forget to pay a visit to EPCOT during your magical vacation in order to enjoy the
EPCOT International Flower & Garden Festival. I'm sure you're going to love all the character topiaries, the Outdoor Kitchens, and the
Garden Rock Concert Series! If you have any other questions before your trip, please don't hesitate to reach back out to us. We're always available and more than happy to help!
Warm hugs,
Ana Paula