Bama
There have been a few times someone has asked me for advice, I've given it and then someone else at the table would contradict me. If it is a good hand they are hesitating on, I might offer to buy it from them. That usually settles any argument <grin>. I was actually "sold" a hand like that. The guy next to me had a soft 19 and the dealer had a 6. The dealer hit 17's. I told him to double it and immediately a couple of the others at the table chimed in exclaiming he would be throwing away a great hand! I offered to buy it, he sold it and I doubled it and drew something stupid like a 7 or something. The dealer busted.
Usually, after a couple of instances like that, the dealer and table will leave you alone. If they don't, then just quit giving advice even when asked and play you game.
At the Plaza, the last time I was out there, a guy had a soft-18 and the dealer had 10. He looked at me like a deer in the headlights. I told him to hit it. The guy sitting next to him was a loud boisterous type expert. He informed me that there was not a basic strategy card anywhere that would tell you to hit a soft-18 against a dealer 10. He even offered to bet me $100 on it! I needed a break anyway, so I headed to the gift shop to get a strategy card. Unfortunately, they were sold out so I took the elevator up to my room, and brought back a set of cards I prepared from Wizard of Odds. I gave him the cards and refused the $100 bet he'd made. He didn't stick around very long after that. Should have taken his money.