I thought it might be kinda fun to look at some of the differences between the Harmony and the Oasis/Allure.
Deck 4 - The Blaze nightclub on the Allure/Oasis has become the Comedy Club on the Harmony. The old Comedy Club on the A/O is now the Diamond Lounge on the H. There is no Blaze nightclub at all on the H.
Deck 5 - The Starbucks that is on the Promenade on the A/O is gone (you will see that H has moved it to the Boardwalk when you get to Deck 6). The Champagne Bar on the A/O will be a bionic bar on the H. The complementary restaurant on the A/O is called Silk. On the H this restaurant is named Chic.
Deck 6 - It appears that they have removed 2 of the interior rooms that they added during the A/O refurb. The Starbucks has been moved from Deck 5 up to Deck 6 on the H. Either the donut shop on the A/O has been removed on the H or they just haven't finished naming all of the little shop/retail areas on the Boardwalk of the H (a number of these spaces are just labeled "retail" at the moment. No doubt they will fill those names in later). The space that is labeled "Candy Beach/Star Pier" on the A/O is now an Arcade on the H. The bar that was smack, dab in the middle of the back of the Boardwalk on the A/O has been moved over closer to the Sabor restaurant. This seems like a good move. That bar was really in the way, IMO.
Deck 8 - It looks like they have removed 1 interior room on the starboard side of the ship
Deck 10 - It looks like they have converted/combined a couple of the smaller balcony rooms into Grand Suites. There are 6 GS on the Harmony (3 starboard, 3 port) and only 4 on the A/O (2 each side)
Deck 11 - They have added 1 new interior room the front cluster of the ship. Again they have converted/combined some smaller balcony rooms into GS. Same config as Deck 10, 6 vs 4. What was the lower level of the Diamond Club on the A/O is now Wonderland restaurant on the H. It appears as if they have removed the Library that is on the A/O completely from the H. The 2 Grand Suites that they added to the aqua theater area on the A/O during drydock are now AquaSuite rooms on the H. They are much bigger than the GSs on the A/O. The GS on the A/O are 466 ft sq (room) 470 ft sq (balcony). On the H, these new AS rooms (classified A4) are 606 ft sq (room) and 626 ft sq (balcony).
Deck 12 - Same conversion/combinations of balconies becoming GS. What was the upper level of the Diamond Club on the A/O is also Wonderland restaurant on the H. Similarly, the GS added to the aft during drydock for A/O are now AS (A4). These GS were 433/362 ft sq and the new AS are 604/631 ft sq.
Deck 14 - The GS added to the aft during drydock for the A/O are again AS (A4). The GS were 421/136 ft sq. The new AS are 562/589 ft sq.
Deck 16 - Either they have removed the Mast Bar that is on the A/O or they just haven't named it yet on the H. That space is just empty on the H deck plans.
Deck 17 - Very curious. It looks as if they have removed both of the Royal Suites with balcony (RS) rooms on the A/O and replaced them with much smaller Crown Loft Suites (L2) on the H. It also looks like the Suite Lounge and Coastal Kitchen on the H are much smaller than the they are on the A/O. So, unless I have missed something (entirely possible) they have completely removed the biggest suites on the ship - the Royal Suites. Perhaps they had trouble keeping them sold since they are SOOOOO expensive. Who knows.
Deck 18 - They have added a new upper level on the H that serves as the water slide launch area.
So...once again they seem to be downgrading the Diamond Lounge, relegating it to some small, interior area on Deck 4 vs the beautiful glass area that it currently has on the O/A and have eliminated the Concierge Lounge completely (as both the Oasis and the Allure have as well).
There are probably plenty of reallocation/changes of different staterooms/categories throughout the decks that I missed. I did not look at every room nor its category. I just got the ones that kinda stood out.
