Saturday is a day off for both Jamie and me, which means chances are that a) he'll be at home all day making it impossible to arrange a surprise party, b) he might have been out celebrating the night before making him hung over, or c) he has other plans.
Stop being difficult and just go with the flow. We're planning a party, not a wedding reception.
I'll get the invites, the music (because I have way better taste in music than you do), the everything else. You get the alcohol. Lots of it. And none of that sweet stuff. Beer, whiskey, vodka and things to mix the vodka with.