Lots of exciting stuff! Sorry about the delay, work let me out very late tonight.
In addition, the spell system with the interactive wands is not just one in which aspiring witches and wizards will be guided to locations with distinguishable marks. A lot of easter eggs will be told to the employees in the area, and therefore the only way to gain knowledge of certain spells will be to speak to the TMs. However, from what I've been told, the TMs will be instigating the spells, so they'll tell guests that if 'they were real wizards/witches/magic folk, they'd be able to perform the right spell to make a certain action happen'. It won't be as guided as it is in Ollivanders. I've also been told that Bluetooth is incorporated into the design of the wands, and there is more confirmation of a kinect-type system being used alongside it.