Hi
How exciting. We went in Aug this year. If you have any q's pop over to the DLP board. I found it to be great.

It would be great to go back.
I am not sure how long you are going for, but you can get a discount for annual passes I think its 10% if you get sponsored. I am more than happy to sponsor you pm me if you like. The annual passes pending on which one I think was 129 euros to 179 euros minus 10% here is a link to the annual passes. We found the discounts to be useful. If you are able to sponsor anyone after 3 months of your pass you can extend your annual pass between 1-12 months.
1 sponsor - is one month extra
2 sponsors - 3 months extra
3 sponsors - 12 months extra.
In my opinion worth every penny. They are not much more than the standard 2-3 day ticket. They give you flexibility, discounts on food, beverages, merchandise and accomodation
http://www.dlp.info/Guide/Guest-Info/Annual-Passports/Annual-Passport-Comparison.asp
http://www.dlrpmagic.com/guides/practical/annualpassports/