Let the waterfront handle the photographs.
At Shem Creek there’s a difference between “meet on the boardwalk” and “join us for the rehearsal dinner.” If the couple steps out for photos, I’d use the private room for a little sleight of hand while the guests wait. Put the magic a few steps past the receiving line. That way a relative can greet both families before making the regrettable decision to trust either one with a deck of cards.
Who gets to call the room to order?
A welcome party can run on short rounds: two or three people take a turn while the others talk, pick up drinks, or find their place cards. Once you know who’s offering the first toast, introduce me to them. Their nod ends the last hand without anybody having to tap a glass twice. At a mixed-age wedding, schedule an adults-only room or portion of the evening.
If your Mount Pleasant venue has outdoor and indoor options, ask which spot belongs to you if the weather changes. A station needs a small clear table, not a second stage. Tell me the reception entrance and the part of the schedule that’s set in stone; I’ll work around it.