Well... it's a bit of a double-edged sword.
We had a discussion about it back on the old forum, about whether having 2 local dances on the same weekend (both Friday and Saturday) was a good thing. I don't think there was consensus.
Some organisers have experienced a drop in numbers when there are 2 dances on the same weekend. But not always.
Personally, I find Saturdays a better evening to go out on. But that's just me!
Oh, funnily enough, Viva are planning a Portishead dance - but we're going to keep the first one very low key as the P'head class is full of fairly new beginners and we don't want to scare them off, but we do want to have a freestyle where they can put into practice what they've learnt in a more relaxed party atmosphere. Assuming it works, more will undoubtably follow!