Aim on getting to the con at least a couple of days before it starts. The days when you could get to the con on Friday morning and be ready by Friday evening are long gone (unless you are running a very small relaxed convention). For Reconvene, most of the committee arrived on the Wednesday before Easter and left on the Wednesday after. This way, if youve ordered something (films, radios, stationery, whatever) and it hasnt arrived, you have some very slight chance of arranging a replacement on Thursday.
For Reconvene, I had a checklist of things that needed to be done and on which days. As usual, reality didnt bear much relationship to the plan, but it did mean that I had some idea of what needed in place by the start of the con.
Set up radios
Put up signs