I order calamari the first time I'm at a new restaurant, if it's present on the menu. I find it's a good single-dish way to judge how good the food is at the establishment by it - because it requires a bit of skill to do right, meaning the chefs/cooks are good, and if it's obviously shaken out of a freezer bag, that probably means that the cooks and chefs are really more glorified fast food workers than anything else.
I have never been to Las Vegas.