1) Liquid and Solidus had pretty much the same goal. Besides, Ocelot may have told Vamp about the plan.
2) Naomi probably wanted to seem like she was on Vamp's side. Or maybe she wanted to provoke Vamp into attacking Snake so that Snake could kill him. After all, Snake did know how to kill Vamp at that point.
3) I guess I missed something.
4) Is it even important? Maybe Raiden simply got injured while saving Sunny. Or maybe he voluntarily took the exoskeleton to accomplish his mission. Who cares anyway.
5) There was no wedding, only engagement. And it's also perfectly explained in the game: to protect Raiden during his mission. Is was all a smoke screen.
6) I'll have to play again. This is one of the things I must have missed.







