Need Shuttle

I need a shuttle/van to take guests from the LI Marriott in Uniondale to Leonard's of Great Neck on Saturday Oct 7th. The cocktail hour starts at 6pm and reception ends at 12am. We blocked 30 rooms at the hotel and are not sure the exact number of people who will be taking the shuttle but it could be up to 50 ppl I think. We were also wondering if it's possible to make 2 trips there b/c we want family to arrive by 5:30 for pics before CH starts.

I'd appreciate any quotes! Thanks!