Is Winbig Casino's welcome bonus actually fair?

Winbig Casino is on my shortlist right now, and the welcome offer is the part I want to get straight before putting any money in. A big headline number means little to me if the wagering terms make it nearly impossible to clear.

What I care about most is how the rollover is really counted: does it apply to the bonus only or to bonus plus deposit, how long you get to finish it, and whether there is a max bet rule that can void your winnings by accident. Also curious whether certain games count less or not at all toward the requirement, since that usually decides if a bonus is worth taking.

If you have claimed the welcome bonus at Winbig Casino, what did it look like in practice, and did the wagering feel reasonable once you started playing? Did you manage to cash out without any surprises in the terms?