You earn Tier Points by playing Casino Games or betting on Sports. Not all bets/wagers earn Tier Points at the same rate.
Tier Points Contributions
Slots: $40 Real Cash Wager = 1 Point
Video Poker: $60 Real Cash Wager = 1 Point
Table (excl. Baccarat): $100 Real Cash Wager = 1 Point
Sports: $100 Real Cash Wager = 1 Point