I will share drinks, or a doob, with the lady once I get there, if she is cool with that.  Many ladies are cool with having a drink or two to break the ice, but as for 420, you will have to let them make the first move...

I never meet a client before hand for drinks...my time is money and just a waste.

#2 NEVER do drugs...Yes some will do it, but sorry I want to have a clear mind so that I am in total control of me and what is going on.

If you are on drugs or drunk, don't bother coming to see me as we will not have a good time.

Makenzie

If a couple of shots is what it takes to make a loose woman out of her, I'm glad to be her enabler.

In the past I have had to send guys home for smelling like weed or/and alcohol, having bloody eyes and a difficulty forming intelligent sentences and yes, showing up WITH drugs at my incall location. I was scared and just wanted them out of there.
If you want to bring something, wine is a safest choice (champagne as a close second) and if she refuses, don't push it.
Also, if you are TOFTT hen definitely do not even talk about weed. Imagine if she is LE.  What's worse? Soliciting her for prostitution or for drugs? Or BOTH? That's a dangerous game.

....have a drink with a provider.  Whether it's someone new or an old friend, it helps break the ice and make things a bit more comfortable.

Before a session, though, I limit myself to one.  Shakespeare had it best when he wrote in "Macbeth" about alcohol: "it provokes the desire, but it takes away the performance."