Did you want rooms that connected with the inside door? Then you need connecting rooms. Adjoining rooms are just rooms next to each other. Maybe you mean you want adjoining, but in case you really want connecting I thought I would explain it a bit.
Also, if you want a preferred room you have to pay for a preferred. It is an upgrade, so the cost is a little bit more. If you didn't pay for a referred room you won't get one. In fact, twice at the Music I have paid for a preferred room and still not gotten one. They had overbooked, and I was bumped back to standard. So while I can't believe that is a common occurence, it does happen.