What is a bonus?
A bonus is a time sensitive amount for a store available to certain Beamers. If available, they are automatically used before your rewards or even your linked card, depending on the amount.
If you see one, use it right away because it resets every time you transact.
How do I use a bonus?
Transacting at a store the bonus is available for, will automatically use the bonus.
If the amount of your transaction is less than the bonus, the bonus will reset after the transaction and show none, unless there's another bonus available for the same account.