I would like to multi-cast a wedding to 2 remote Skype PC users from my iPhone 4S, is this doable?
Unfortunately Skype for iPhone does not support initiating conference calls and it is also not possible to host or participate in a group video call.
Unfortunately for the problem you stated there is no solution with mobile Skype clients. If you wish to multicast an event to other parties then you need a PC or a Mac with Skype 5.x installed upon it, in order to make video calls.
you're complaining that a phillips screwdriver is unsuitable for flat head screws. grow up & use one of the many suitable technologies out there, such as ustream.