Yeah, 50% quorum required.
Parliamentary elections turnout will easily exceed 50% so it'll be a huge cluster fuck to boycott referendum because people will likely be handed both ballots by default. It's illegal to take ballot away or destroy it. Invalid votes are counted toward quorum. So far it looks like we'll have to specifically refuse and have this on the record.
Holding elections and referendum together is kinda illegal but who's going to stop them.
EU is suing us because supreme court doesn't meet criteria for being independent and impartial. Constitutional court is even worse.
The questions are "have you stopped beating your wife yet?" themed and any participation legitimizes this circus unfortunately.