I recommend pre booking, normally cheaper too, look at Kas & Bobby's posts. They will point you in the right direction and maybe sort you out . They also have a bar in the resort centre where you will meet newcomers and Boro regulars who will help you with any questions.
Agree with Tateyheed...there are some agents who offer slightly cheaper pass only prices, however the 2 we normally recommend and who are usuallly slightly cheaper have not released their prices yet....will let you know as soon as they do...