We selected BE gty (all that was available for BE).
1 month later received an upgrade to AC.
Not good for us: we found that the AC suite balconies were uncovered. I downgraded to a balcony room because AD (covered) suite was WAIT LISTED.
On Royal Caribbean cruise ship I gty'd a balcony room. The room was assigned two days later (no upgrade). It was a good room and a good location. We were very happy.
So based on my experience you could get lucky....or not.
Hope this helps.