Things you have to have (if you dont - let us know!)
Digital SLR camera OR fancy pants compact with manual settings (AV/TV)
Tripod (we do have spares, but you must let us know if you dont have one)
Memory cards
Charged batteries
A hat (& sunscreen)
An umbrella
Waterproofs
Sensible shoes
Other useful things
Filters - Polariser, Nuetral Density, UV
Hand Towel (in case of weather!)
Camera rain cover - plastic bag and elastic band or hotel showercap will do