The invitation for the party states that “sponsors” who pay between $250 and $2,500 to attend will have the county executive all to themselves, 6-7 p.m. at Row Boat Willie’s Dock Bar, a Millers Island institution situated near the end of a peninsula that stabs into Hawk Cove and looks out on the Chesapeake Bay beyond Pleasure Island. After the VIP reception, guests with $40 tickets will get to wish Olszewski a happy 37th birthday until 9 p.m. on a night when Willie’s is typically closed.