Ah! the Czech stuff, eh? I've not had the, erm... privilege to sample any of that stuff. Have heard horrible things of it. If you want a real fairy experience, stay away from that area.
I would suggest the (I think it's) Serpis. It's a red absinthe. Doesn't taste horrible, is cheap (considering), and has a rather high Thujone content. Water it properly, no real sugar needed. Drink a few glasses of it, and no other alcohol. The alcohol can overpower the thujone, and the point of being absinthe minded is not drunkeness.
Don't chug it, either. Drink it, sip it, enjoy it. Let the stuff do its work. Remember, this is not just alcohol. You don't just chug a bunch and then go party. Also, don't expect hallucinations and an acid trip. I referred to it as being absinthe minded because it is more a mood setter. Brings about good conversation.
oh, and some good (perhaps dark) music helps set the stage.
hope this helps, and please stop treating the fairy as a dirty two bit hooker. She'll only slap you around for that. Give her some respect, and she can show you a fine time.
(and if you want some suggestions of nicer bottles, I can give some of those, too. But they tend to run a bit more money.)