Look like a a good detail is reauired for that vehicle.
The hazing is not a problem, just needs a good polish.
As for the sap buil up, you'll be claying the vehicle so it should help if not you can try using some Tarminator, it should help out.
You'll have to go through the motions though:
- Wash with two bucket method with grit guard
- Clay, may need an aggresive clay bar.
- Dry
- Tape up.
- Polish, if your new at detailing a PC will be your friend if your a rotary user use a rotary or flex..ect..ect..
- Protect via wax or sealant.
This should leave a fresh looking paint.
Hope this helps.