Video shoot, assistents, make up ? No way! Photographers just come alone and never ever stay at parties during the evening. And what pressure ? That more like 'beginners anxiety', cause you (me too ;) are afraid that you'll miss some big moment. BUT in reality, if you wouldn't be ready, you just open your mouth and everything will be on hold till you are ready with your film. That always happened once or twice to every marriage I been to :) But my idea is that you could be a lot cheaper during the first few tries and explain people that. A lot of people can't afford any half-decent photographer at all, so they'd be more than happy to take a chance with you. Let's face it guys, most marriages out there are all the same, so the only pressure is just cause you haven't tried it before. Like with....uhmmm....well... lots of other things ;)