We went on an Illuminations Cruise,it was great My DD's were 9 & 7 at the time.We shared the cruise with 2 other Dis familys,so there was 11 of us alltogether,I cant remember how much it was but it wasnt a lot because we split the cost and paid per person.We went on the Pontoon style boat and Bob(our driver) drove us around and told us facts all about Disney hotels the lakes,parks, good places to eat etc..He drove us around to our spot there was 3 other boats there that night,we chatted for a while then it started.After it finished he turned the boat around and we went back to the dock,again taking to us all the time he was a very friendy guy who new alot about Disney.
Also it was a great way to view Illuminations.
If you go to the Theme Park Attractions & Strategies board theres a sticky right at the top of the page it will tell you every thing you need to know about the Illuminations Cruise,the type o boats they do,the cost,how to book ect..
Hope this helps.Have Fun