Glad you have sorted out somewhere to stay....what area are you in?
Falmouth has all types of Restaurants to suit all budgets and tastes.....So i'll lis some names and you can do a google on them :)
Here is a web site listing all restaurants for you:-
My Fav's which are listed on the above site are:-
The Shed, Events Square
Five Degree's West, across the road and up a bit from The Shed!
The Pandora Inn at Mylor Bridge
Ferry Boat Inn, Helford Passage, Mawnan Smith
To name but a few......
Boat trips are found on the Prince of Wales Pier at one end of the town (near the Moor). Check out the following web pages:-
There are other boats which leave from here too....some go down the Helford to "Frenchmans Creek" some to up Carrick Roads to a lovely Inn on the creek edge for lunch and back. You can catch a passenger ferry across to St.Mawes - nice to visit or another passenger ferry to Truro.
As for the Eden Project you will need to drive there really, it's about 25 miles and will take between 50 mins - 1hr (traffic dependant!) Try to avoid on a rainy day (i know that would be an ideal day) but so does every other person think it would be good to go then....can get VERY busy!! hehe..
Hope this helps if you want any other info just ask :) Caz