If i wanted to go to the Poly for some lunch,shopping and to check out the resort will i be aloud to park. i do have a handicap pass and do they have valet...
As long as there aren't any space issues you will be allowed to park. I have never seen time limits expressed or validation required, especially on a "regular" day (non holiday, non peak periods). You can use the free valet parking if you have a meal reservation, according to this:
Parking
Valet parking at Disney Deluxe hotels is complimentary for any Guest with a valid disability parking permit and a current room or dining reservation at that particular resort. Designated parking areas are available for Guests with disabilities at all Disney Resort hotels. A valid disability-parking permit is required.