Had experience with booking specialties online with Regent, Oceania's big sister and supposed "six-star luxury" line. Did not like that approach st all. Opened at midnight Central time for us, but penthouse and above had first crack days earlier, a policy I really dislike. You were allowed one reservation in each specialty. Few openings were left.
On our second Regent cruise, they borrowed the hotel and cruise directors from Oceania, both unimpressive and not very visible. The CD would walk past you like you weren't there. I suppose some prefer it that way.