In the event that

I think the second one is right.
For the first one you should use in case that .

Could anyone else tell me what they think?

They are both correct but the first is better because it is shorter and more to the point.

One minor correction to number two:

2 In the event that we get mugged you won't have your wallet on you, as you'll have left it at home.

Hi, Ray

I presume the "that" (that follows each "in the event") is optional here, am I correct ?

Thanks !

MrPernicketyI presume the "that" (that follows each "in the event") is optional here, am I correct ?

I don't have a problem leaving out "that" although my preference is to include it.

I wish I could say with certainty whether I would include it or not if I were writing this sentence from scratch but the truth is I can't. I suppose it would depend in p

I agree with Coloraday (almost) -- the first example should be, "Leave your wallet at home in case we get mugged." You can't use "in the event" for the same reason you can't say "Leave your wallet at home if we get mugged." In the event that we get mugged, it will be too late to leave your wallet at home.

I don't have strong feelings about "in the event" vs. "in the even

khoffIn the event that we get mugged, it will be too late to leave your wallet at home.

Good point, I didn't even notice that.