Re: 2 years to negotiate all this stuff.
They will have to - given current trade balance between UK and rest of EU, they have much more to lose. Also, EEA is perfectly good treaty on the movement of goods, services and people, of which UK is already part - there will be no need to write new treaties from scratch to cover these areas, only join to EFTA next to Norway and Iceland (and Liechtenstein). If you follow the news, these countries will be happy to have Britain in EFTA. Since Switzerland is not part of EFTA, they have to negotiate by themselves. EEA does not cover all aspects of live, but that is actually why many want to leave the EU in the first place.