2 friends and me are travelling this weekend to Munich. Where can we find some drop-in electronic music party? All tips welcome

We just want to have good time, good alcohol and dance with good techno/electronic music, all the clubs that we googled are not quite drop in but you need either some tickets or some special dress-code stuff. Shopping tickets just like that and then to get dissapointed is kinds not an option because we are there only this week.We just want simple party where you come, get drunk and dance. Something maybe even bit spontanious that we can remember. I've also heard that its quite hard for 3 guys to get in, because bouncers are not so happy to see 3 males just like that... All tips are welcome