It sounds like what DisDee wants to do is have Magical Express take their luggage, go to
Alamo, then drive straight to Universal, spend the day there, then proceed to Pop Century and check in later that evening.
Magical Express doesn't work that way. In order for your luggage to be transported to your Disney resort, at least some of your party has to get on the Magical Express bus and go to the resort.
On a separate note, the resort folks don't even like storing your luggage if you are not checking in immediately.
Me and hubby arrived by town car once, and handed our luggage to the luggage folks at All-Stars, we looked at the line and saw it was huge, so then we turned right around to head for the bus stop. (We had annual passes, so didn't NEED to check in to go to the parks). The luggage folks stopped us and said we really needed to go ahead and check in so that they could get our luggage on the delivery schedule. We went inside and waited in the line for about 5 minutes, then bailed and went out the door through the gift shop and went on to the parks anyway. When we did finally check in about 2am after Pleasure Island closed, we had to carry our own luggage, plus the folks at check-in said they would have preferred to not have this unclaimed luggage sitting in the storage area.
Carol