You should refuse to go and encourage your friend to do the same. The Bible, God’s Word tells us in Leviticus 19:31 not to go to them and be defiled. In Acts 16:16-19 Paul cast an evil spirit out of a girl who was telling fortunes. The devil is a deceiver and a liar. The spiritual wickedness involved with these practices has caused many people to stray away from following the One True God of the Bible. I would never encourage associating with demoniac powers, just for fun.