A few folks have wondered, so providing an answer.

Just had a daily reward give me a Fog Buster when I already had 100% of map revealed, and because I already had 5 in my inventory, it forced me to use it, and of course it did nothing (b/c there was nothing left to reveal).

Similar questions came up with Market Raid. If you get a MR at the beginning of a level and have a full inventory already and haven't found a market on the current level, what happens? I guess the reward will stay up waiting to be claimed until you find a market ... which could be multiple days from that time and could prevent a future daily reward from kicking off. But haven't had this happen yet to confirm. Anyone know?

Or if you're at the end of the level and have markets but have no need for more items. In this case, although I haven't had it happen yet, I suppose the answer is you will have to use it and get the items anyhow, and it'll just go to waste because you'll end the level with a bunch of items in hand.

And same for Inspire Mercs ... either before you have a merc camp to draw from, or after you've depleted them all.

On shorter levels, it's best to just defer the reward (don't click it) if you're near the end of the level. But on the longer levels, the "end of the level" can still be multiple days, so it's a gamble. It could a free cache, time warp, supercharge army/mine, which you may opt to use at that time ... but could or IM or MR, etc, in which case better to defer if you can hold off.

Just had a daily reward give me a Fog Buster when I already had 100% of map revealed, and because I already had 5 in my inventory, it forced me to use it, and of course it did nothing (b/c there was nothing left to reveal).

That shouldn't be possible. Are you sure there wasn't one territory hiding somewhere that was still fogged?

If you try to use a fog buster when every territory is revealed, you'll get a message saying you can't use it.

Daily bonus will never give you a power you can't use. It won't give you a market raid if you have no markets. It won't give you an Inspire Merceniares if you have no mercenary camps. It won't give you a supercharge mine if you have no mines. etc.

That's good to know - thanks!

I can't know for sure, but perhaps there was a territory hiding somewhere that hadn't been revealed that I just didn't see.