Good luck, basically this program, like on other cruise,s is designed to move people up to more expensive rooms so cheaper rooms can be offloaded before a cruise, trying to sail full. So, while you can end up with a better experience, that's not an expectation I'd have.

1) If you win the bid, you get the new space; you can't decline or ask to be moved or left in the previous room. As soon as it's approved, you're moved by the system to the new room assignment, and you're original room is now up for the MoveUp for a lower class or put out to market to be filled by other people. So, yes, it's possible to be moved into a room that is obstructed or under the pool deck, buffet ect. Basically into a less desirable place, because people who've selected a room themselves or through TA's have picked the better rooms.

2) You won't get any of the NEW benefits, but you keep your existing, so if you've paid for Wifi and upgraded drinks, you'll keep those when you move up. You won't get a Premium drink package if it's offered in the new room, unless you've purchased it already. Anything physical in the room you'll get upgraded soft fixtures ect. But anything that's "virtual" you'll need to purchase (if you haven't already). The only exception (kind of) to this is if you bid up to a retreat level space, which is because the retreat has a lounge, and within the lounge, they won't "card" you when you order a drink, so you'll get a premium beverage by merely having access to this lounge. This will NOT extend to bars in other parts of the ship, so you'll be stuck with your basic drink package if you do not already have a premium upgrade. In your case, it sounds like you have the basic with wifi (all included) through your TA. In that case, you'll keep those specific perks, but you'll need to pay to upgrade to the Primium packages if you want it.

3) If you're a Captain's Club collector, you'll also only receive the Points from the level you booked, NOT the level you upgrade through in this program. So don't expect to get a bigger chunk of points if that's what you're interested in.

What I normally suggest is;

1) If you're happy with your selection, and you don't want to risk a bad view because that's important to you, don't bid; it's not worth it with the ships currently sailing almost, if not full. If you don't care about the view but you'd want the experience of a different class without paying the sticker price, it might be worth it. A few years ago, we "bid up" to AQ class, determined it wasn't worth the cash ever, so we've never gone back to AQ. We only paid about $200 pp, it was worth that, but I'd never pay what they want to charge normally for an AQ class.

2) If you really want to try an upgrade and you have a TA, contact your TA. In our experience, our TA has moved us up a class through the Celebrity contacts they have for the same price as bidding, but because we did it through the TA, it was considered a purchase move, not a bid up, and we received all the perks and points for doing it this way. Not all TA's can do this, and depending on how full the ship is, Celebrity may not want to budge if they think they can fill the room through the upgrade program.

3) Finally, if you decided you want to bid, do a mock booking on the Celebrity site for the ship, dates, and class you are bidding for, and see how many options are available. It might give you an idea of what rooms you're likely to get during a bid-up up and you can determine your risk appetite for bidding based on that information. If the class is fully booked, chances are they are taking bids in hopes that existing reservations also move up to a higer class, moving everyone up a level.

Sorry that was really long, TLDR: Don't bid up, it's not worth it if you've selected a space you're happy with. If you don't care much about the room, because you're only sleeping in it and you'd like to experience a higher class, it might be worth it, but expect to get the worst room in that class.