First, regardless if you know one or more of the principals, do not hover around the meeting. Your venue is hosting this, not you personally, and most of the principals don't know you. Further, in not knowing you, they are not likely to take kindly to your sticking your head in while important and sensitive issues about how several hundred million dollars are going to be structured and managed are being discussed. Indeed, they barely tolerate the likes of me. The Hostess should keep her nervous self invisible.

Second, while I agree that scheduling a special breakfast meeting at your establishment and then, well, simply showing up for lunch instead is at best poor form, again, as hostess trying to make a mark for your brand bloody new establishment, dropping comments on this is not intelligent nor does it help you. You are not in a personal relationship on this. However sympathetic I am to the whole issue of form, politeness in dealing with restos and serving staff and the like, I can't see what you expected from these guys. The money discussions come before all, and the fact that one of the bastards is a Gulfie who jets around the world simply means you have to suck up bad behaviour. (Or find another business)

Third, interrupting a discussion to tell the principal you know that you have some blah blah you'd like to discuss afterwards is again, a bad idea. Now of course you could not know that they were in the midst of discussing (which is to say disagreeing) issues regarding valuation of current assets being transferred (if the whole fucking thing does not get blown to fuck over these issues) to the new entity and thus in a bit of a sensitive convo in regards to Very Large Sums of Money. Nevertheless, it is pretty fucking stupid to interrupt what you know to be an important business meeting when you're trying to leverage your somewhat mediocre theme resto into a funky yet still businesslike eat and meet conferencish type venue. See point one, but also, stop flitting about you drunk senseless git.

Fourth, don't make snide comments to staff about myself or others. I speak the languages, you don't and I hear about things. From your own staff you senseless drunken git. Worse, don't trash talk high level ministers, etc. etc. when you're a start up angling at a mover and shaker market, depending on getting movers and shakers to drop some currency at your place. If you don't want to get blackballed, shut your motherfucking trap.

Just some lessons I have observed