Signaforce,, yes the LP12 is more sensitive to footfall. One suggestion I can offer is to place a clear glass of water on the stand for your turntable. Walk around as you might while listening. If the water shows movement then that indicates the level of effect of footfall which the TT will be need to overcome. One thing you can try as well is brace the top of your stand to the wall behind it with a board, short shower rod that can be tightened etc. Then observe the water and see if the movement is reduced. That may help the LP12 in the rejection of influence of the environment or conditions it will be used in.
I hope that helps.