April 24 is the start of adult season. Youth the Sat before. Weeks run Monday to Fri for 3 weeks A through C. Week D allows 2 weeks all day, E is Saturdays. No Sunday.
You can buy multiple permits so potentially you can shoot a ton of birds, just gonna cost a bit to do so.
I love way north of Vineland, in my area permits are easy to get. Down south there's an awful lot of birds but it's hard to get a permit if you haven't already applied. Permits are zone specific. Before you go be sure a permit is available for ya