Get your clothes ready. If brining two sets, ensure they're both complete and ready.
Get your mask ready.
Get any leaflets, signs, cake etc ready.
Set your Alarms - we don't want you oversleeping.
Charge your cameras/phones etc. Also, those with camera's may wish to empty the memory card just in case.
Prepare your drinks. e.g water.
Straws may be a huge help to the above as well.
Chance of rain, so come prepared for that. Waterproofed signs would be a good idea.
Do NOT obstruct shop doorways.
KNOW THE BASICS. Make sure you can at least explain all of the basic problems and stories. Some people will know more, some won't, but everyone should at least know the basic information.
Static Site Protest ChecklistAnything I've missed?