I suppose you do - but wasn't sure (since it's a big event/area) whether you can just turn up (like if there's just 2 or 3 of you and NOT at the week-end) and pay at 'the gate' so to speak.

I think everyone just sits at long tables with everyone else, don't they? As you can tell, I've not been to a Ramadan Tent, so have no idea .....