We were in Plymouth for 2 nights and had an enjoyable seafood meal the night before. We passed by Sam Diego's about 7pm on a Tuesday and it was packed. On Wednesday after whale watching we walked up to Sam Diego's. It was about 5pm Surprisingly no wait. Was given a nice quiet table and the waitress was just right, not overbearing, or rushing. Drinks got to us in a timely manner, chips and salsa were fresh. There was no problem getting a 2nd helping of the chips. Appetizer was hot red pepper poppers. They were adequate. I ordered the triple dinner--Beef burrito--beef was not good at all, ate the wrap, the chicken on the other item was dried out and the taco was pretty good. Atmosphere, reasonable prices and good service they get all A's, The food itself gets a C. There is a chain called Jose Tejas that puts Sams to shame, and it is a shame, the potential is there but the food coming out dried at a time when the place is not busy does not speak well. You decide, I will give them one more shot when back in the area but, if no improvement they probably will not be around anyway.