If it is not hit and run
If there are places in Vegas that are not overly sweaty at your bet level and you want to return or if there is a decent local Indian Casino near where you live, making a friend out of pit types can only help you. It can help you even if at some point they decide they do not want you playing blackjack anymore. They would most likely just back you off the game and not toss you and probably do it with some amount of class. The let me buy you dinner but no more bj approach.
There are places where I have played so often and pit types who must know what I am doing that I am sure my attitude and friendliness can only help. I also understand that if word did come to them from up above, they would have no choice but to act. I think it gets down to this; you have much less to loose if you are friendly.
To expand this a little. Think about how many ploppys, when loosing, treat dealers horridly and even complain to the pit about how bad things are. Though in certain instances I advocate blending in with the ploppy, I take the opposite approach here. Most pit types were once dealers and they know how it feels when everyone at the table is hating them for taking their money. We all know that in actuality they are just pulling the cards out of the shoe, playing by the house rules, making no decisions whatsoever that effect your win/loss. You might not love the dealer who just took your money but you will be appreciated if you do not jump all over him. Furthermore; at my local Indian Casino, nearly half the pit are dual rates. This means that the dealer you did not jump on yesterday might be the pit critter you run into tomorrow.
All of this does nothing to offset some exec looking at your win/loss record over a period of time. So if you have a local place friendliness should be combined with constant, careful, ratholing of green.
Victoria