My DH often ordered a "regular" entree, then another to sample. Regretfully they would bring an entire other meal, not just the entree portion. So yes, some did go to waste. The husband of our tablemates often did the same.
Ivana would often bring out appetizers for us to sample, even if we hadn't ordered them, because she thought we would enjoy them.
There were times that he couldn't decide on dessert, so they brought him both.
They are just too eager to please. One night Maclean, our head server stopped by as we were eating dessert, and noticed DS hadn't ordered anything. He asked why, and DS said there was nothing that interested him. Maclean asked what he would like, and DS answered "whipped cream". Moments later he was back with a heaping bowl of nothing but whipped cream. DS was in heaven!
After the first couple days I was pretty sick of the rich foods, and one night ordered a plain chicken breast with rice and steamed broccoli. It really hit the spot.
All in all I gained about five pounds.
Anne