Hiya, Luke!
I have three grandbabies, and boy oh boy was I sweating over having to get their three-person stroller into the
Walt Disney World theme parks the first day we took them. It didn't occur to me to check ahead of time for dimensions, and it caused some unnecessary stress. I'm so glad you are thinking ahead and checking on the rules as they pertain to your stroller.
The current
park rules regarding dimensions for strollers state that they must be no bigger than 31 inches wide and 52 inches long. I've done some research on the dimensions for the Smart Trike SR7, and it looks like you are correct in the stroller measurements. You may want to measure the one you have to be certain of your particular stroller's dimensions, as design changes may impact those measurements.
The one thing I do caution you about is the pedals. You will have to remove them if you want to bring the stroller into the theme parks. While bicycles are permitted in designated Disney resort areas, they are not permitted in the theme parks.
While you are visiting the parks, check out the
baby care centers. They are clean, cool places to do diaper changes or feedings, and they have sinks and microwaves in case you need to prepare a bottle or a meal. And if you've forgotten anything, like diapers, wipes, or even over-the-counter medications, they have those necessities available for purchase.
Have an absolutely wonderful visit, Luke!
Anna