Zorak I just experienced the same thing! Same dates.
25 Feb - Made reservation for 28 Feb - 1 Mar. Received confirmation e-mail shortly after making reservation.
26 Feb 10am ET - "Plan for your incoming stay" email
27 Feb 4pm ET - "Check In now to access your Elite benefits"
28 Feb 4pm ET - "Check In now to access your Elite benefits"
29 Feb 5pm ET - "Check In now to access your Elite benefits"
1 Mar 3am ET - Folio e-mailed
1 Mar 4pm ET - Folio e-mailed
1 Mar 5pm ET - "Check In now to access your Elite benefits"