Pickup side. Mount Vernon requests most often begin in South Side, North Side, West Side and Fleetwood. A street address beats a neighborhood every time. Where a 40-foot vehicle can stop is a narrower question than where you live.
Where groups go. Destinations named for Mount Vernon include Wartburg, Memorial Field, St. Paul's Church National Historic Site and Fourth Street Entertainment District. Some have a coach door away from the main entrance. Worth knowing before the group is standing outside.
Busy weekends. Local calendars around Mount Vernon Arts & Music Festival, Juneteenth Celebration and Fourth of July at Memorial Field concentrate demand into a handful of weekends. Availability tightens around them, so get the date held rather than shopping it.
Popular runs. Mount Vernon to Manhattan nightlife via Bronx River Pkwy (25 min); Mount Vernon to Yonkers Ridge Hill entertainment; Westchester County event circuit. List the stops in the order you want them and be realistic about the finish — that is what the price is built on.
Beyond Mount Vernon. Trips that continue into Albany, Amherst, Binghamton or Bronx are quoted as one itinerary. The New York guide covers statewide staging and long-distance planning.