Are there plans of some new giveaways and contests again on the games and rounds? It looks like that there's not that much at all. I've won last time $50 and then able to fulfill the wagering requirement. 
As for crypto, it depends on the blockchain network when the withdrawal transaction gets confirmed.
Based on my experience, it's really depending on the network of the crypto that you've chosen. But at most times, if you use those networks that are less traffic, they're almost instant too.