What is the difference between a Rebuy Tournament and a Reentry Tournament?

The most important distinction is that as long as a player rebuys in a Rebuy Tournament, they have not been eliminated from the tournament. Even if they lose all their chips, if they rebuy, there is no elimination.

In a Reentry Tournament, when a player loses all their chips, they are eliminated, but have the option to register again for the tournament.

The main implications for this in Blind Valet are:

• Bounties are not issued when a player rebuys, because there was not an elimination.
• Bounties are issued for every entry in a reentry tournament, as each one is an elimination and a new registration.
• For league tournaments, by default only a player's first entry counts toward their league finish and points; re-entries are ignored.
• You can change this per league with the Count re-entries in scoring option in League settings. When enabled, a player's best (deepest) finish across all their entries counts, and their cost, knockouts, winnings, rebuys and add-ons are summed across every entry for custom point formulas.