I have not written on this forum previously and restaurants are I think subjective, but here goes.
We were there about month ago, on a Saturday night. We had planned to eat in Sam's but I knew from past experiences that it was likely to be crowded, which it was (at 19.45). They now have a system whereby you can wait in their cocktail bar (which also has extra tables), having placed your order first (compulsory). We were told it would be about one hour minimum, so decided to go elsewhere as we had a hungry teenager to feed, as well as ourselves.
A few metres along the main street we found The Commodore which in past years was what I would describe as a 'chicken and chips joint'. It has moved upmarket and now it has mainly Italian style dishes. We were more than satisfied with the food, the prices and the service.
Having said all that Sam's is still my first choice although there are several other good restaurants in Fowey.
note:Sam's has a website
www.samsfowey.co.uk
Michael.