Specs & dimensions for this model are at CVP-301
Ideally you would arrive to pick up the piano with another able bodied person and a vehicle that you can just put it in assembled - mini van, pick up will do fine. The weight is 149 lbs. so 2 men can easily carry it out. If that's too heavy you can take the main unit off the stand by removing the 4 phillips head screws that hold it on.
If you don't have a vehicle able to accommodate the piano assembled consider borrowing one from someone. You can also dissassemble it completely - be sure that your vehicle can accomodate the width of the main keyboard part as that cannot be taken apart width is 54-5/16". Measure the vehicle you're taking to pick it up to make sure you have 54-5/16". Typically it will fit laying across the back seat of a car but you do need to measure it ahead of time to make sure. A phillips screwdriver is all you'll need. The top keyboard part is held to the stand with 4 phillips screws on each side. If you need to take the stand apart further you can.
Bring a half dozen blankets or moving pads to wrap the various parts. Mark each screw where it came out of, label them and put them in an envelope so you know which screw goes where.