The contest was in July. In August, the Hilton knew who won. On August 31 I got an email telling me I won a $5 voucher. In mid-October I got the voucher in the mail.

The contest was in July.
In August, the Hilton knew who won.
On August 31 I got an email telling me I won a $5 voucher.
In mid-October I got the voucher in the mail.