Thanks to SnitchSeeker we have some information about a press conference with Thierry Coup, vice president of creative development for Universal Creative:

• At Dervish and Banges, there will be wand accessories that can be bought (though sadly can’t be revealed now).
• The wand choosing process can take anywhere from two to five minutes at least to much more. Pricing range has not been determined; the wand choosing itself won’t be charged, just the wand itself.
• There will be wands from some of the main characters wands – hero wands – including in sets, which are made by Noble Collection; this is different to the personal wands that will be chosen for ‘wizard’ guests to the park.
• As for the shops in Hogsmeade, they are near completion (about 90 percent), but there are still “final touches” to be done to them.
• Hogwarts Castle, from the exterior, is “very large.” Iconic rooms, such as Dumbledore’s office, the Dark Arts classroom, the common room (presumably Gryffindor’s) and the Great Hall, amongst others, will be there and to scale.
• Many props will be displayed from the Harry Potter film sets, such as the Flying Ford Anglia (which sadly did not fly).
• The Owl Post and Dervish and Banges are the smallest shops, Ollivanders is slightly larger, and Zonko’s joke shop is the largest. There are no queues to get into the shops, despite being interactive experiences as well as shops.
• There are no plans yet for expansion within the park, but it is a possibility.
• The shops will be as close to the films’ version as possible (as shown by the early Ollivander’s shop photos). Coup and the rest of his creative team opted to make it as faithful to the original project as possible.