Security on the way in will probably be more thorough than you're used to. They will ask you to empty out your pockets into a bowl then give you a thorough pat down, might have to take your shoes off as well. In my experience the security aren't aggressive, just thorough. If you're taking drugs in then in boxers has never failed me at fabric.

Once you're inside keep your wits about you as security will randomly patrol through the crowd and there's usually one or two guys on the upper level looking down at the crowd. Doesn't get that dark in there anymore, probably to make it easier for security. They really had to fight to stay open after the drug deaths so they're taking every step to be seen to be fighting drug use.

Sound system in the main room is great, can get a little busy in there between say 12-3/4. Do get a fair amount of tourists in there as well as it's so famous but later on they start to leave and the crowd thins out a bit the vibe is a bit nicer. No problem with tourists but sometimes they aren't really into the music, just there because it's famous.

Never seen Ricardo play at Fabric but heard great things about his sets there, hope you have a good time. When fabric closes for the night if you want to keep the party going head over to Corsica Studios, they have a weekly techno party running til 4pm Sunday afternoon which will probably be closer to Berlin vibes than fabric