In the open for Forbidden Lands. And for things like Stealth, I let the players roll, but I only let them make the actual roll when it matters, not when they declare they are sneaking. In other words, the player says they are going to sneak, and I assume they are sneaking. Then, when they try to sneak past the guard, I explain that they are trying to move from shadow to shadow, and then have them make the stealth roll. That way there is tension about whether they succeed or fail, and the impact of the roll affects that moment. So, it's less of "here's my roll to cover my next 10 minutes of sneaking" and more "here's the one moment in that 10 minutes of sneaking where it's important to know if you stay unseen."