I am going to disagree with a lot of the posters so far. I have been on almost every ship in RC's fleet, some multiple times. I have done several transatlantic cruises. I have no interest in sailing a TA on the Enchantment.
1. Middle of the pack
2. Old, can be crowded because when they stretched her and added many cabins, they did NOT enlarge the theater or the Windjammer buffet. Those can get crowded and congested.
3. OV are quite small on the Enchantment. I would only get one on Deck 4. And not too far forward. (not forward of the elevators). There is no refrigerator (which is really a cooler) in an OV or interior. (except the 16 IM cabins midship on Decks 7 & 8, which usually sell out very fast).
4. You won't be able to access the Concierge Lounge or Diamond Lounge, but those are "hard to find" and you probably wouldn't even know that they are there. On a TA, they may take over part or all of the Viking Crown Lounge at some times of the day.
5. As stable as any ship. Weather is unpredictable.
6. Enchantment drink package prices have been high in relation to other ships, IME, so watch for lower prices on holiday "sales". But beware that whole "sale" thing. It can be, ahem, confusing.
7. DO NOT BUY THE Unlimited Dining Package. I think that Royal Caribbean has brass balls even offering it on the Enchantment. ONE specialty restaurant. ONE. Not even a Johnny Rockets. JUST CHOPS.
7 a. I don't know how you feel, but I could not function without internet access. Enchantment does have the new Starlink system. So, I would suggest buying an internet package pre-cruise.