We just got off the Allure and had an excellent week. We have cruised on the Freedom (Owner's Suite) Disney Fantasy (1 Bedroom Suite) and the Allure (Royal Suite), and I will try to compare the three experiences.
Allure of the Seas is a huge beautiful ship. The Central Park and Boardwalk are unique and a welcome break from the usual popular areas (pool deck and promenade). The "wow" areas are where Royal outshines Disney, which has a beautiful atrium/staircase main entry but cannot compare to the Royal ships Promenade or Central Park.
Lines/Crowd:
Clarification, were on the Royal suite, not royal family suite. Large luxurious room, dining on the balcony and the balcony jacuzzi are awesome. Lots of room for clothes and luggage. Extra perk of being escorted on and off the ship to avoid lines (I am sure everyone else hated us!!! but, we did pay for the extra service and is was worth it to feel like such a VIP on vacation!!).