Staten Island restaurants with outdoor tables?
IIRC, Ruddy & Dean (Richmond Terrace right near the ferry) have an outdoor deck one level up with a view of the harbor...but I don't know if they will have opened it that early in the season, or if it will be warm enough that day. I imagine it could be windy up there.
Apparently, also Zest Restaurant, 977 Bay, also has outdoor garden seating. Heard nice things about this place from a neighbor of mine, but have not been there yet.
Ruddy & Dean
44 Richmond Ter, Staten Island, NY 10301