To claim the welcome offer, you only have to create an account and deposit the minimum amount. The required deposit is generally pretty reasonable for players here. My usual recommendation is to always check the betting conditions. For Rainbet, these requirements are quite reasonable. You must wager the bonus money a specified number of times before any winnings become withdrawable. From what I’ve seen, Rainbet’s terms are fair, usually hovering around 30x the bonus value, which is achievable if you play wisely.