Same thing happened to me as to the OP: "Earn 35,000 bonus points after 20 paid nights, plus an additional 15,000 bonus points after 25 paid nights, up to 50,000." So I phoned to request a change. The rep. notated my account for the 2 Cat. IV nights for 4 stays.

Bigguy #2 is bang-on in exclaiming Hah! to the "Mega" name. Yeah right, ONE free night in a high-level juicy hotel after TWENTY nights?? Compare that with Hyatt FFN/ BWB or Radisson's & Starwood's summer promos!