Private to Roger/Melinda
It's just what I've seen done at different weddings I've been present at. I hope you find something. Acually, I'm sure you'll find something.
I can only imagine how hard that will be, so maybe play the aloof card and only pay close attention to... someone, anyone, who can be trusted not to out you if you slip and magic slips out.
You will have to get in line, it seems, but I will issue the same threat to you as I did to them: Don't you dare! I'm not having either of you in trouble because of someone like that. You're far too valuable for that.
I can make beautiful cakes and though it may be considered bad for business, a ridiculously huge sum of money is only depending on how long I have to prepare it and how many it needs to feed. I'd be happy to do a consultation with her, unless she wants to be surprised, in which case I simply need to know which cake and filling she prefers (I'll Owl you the list of what I make, though I will make anything, even if it's not on the list), colour scheme and delivery time and location. Oh, and of course, I also need to know how many guests it's for.