Well I'm from the UK so usually book from over here, others on the forum book in the US though and will know better, Johnie is actually a travel agent and may be able to help you too. A quick look for the end of this year with tickets at the Polynesian is around $4500 for 7 days. I'm sure you will be able to meet your budget including dining.

Whatever you decide be sure to ask as many questions as you like, we love answering them and hope we can help you can make your first trip magical!