Whe you stake in the smart program you receive a 24% APY of your locked amount of AVA.

Let's say that that you stake 1000 and get a smart2, besides the discounts, you'll receive every month:

• 10 AVA (1% monthly * 12 = 12%)
• Travel credits worth an other 1% (If AVA price 1$, you'll receive 10 Travel credits).

So, 12% in AVA and the other 12% in travel credits (1 Travel credit = 1$).

can you use it to exchange Ava?

Nope, you can only use the TC in the platform.

Hope that helps.