I agreed to do a wedding for a couple and have sent them a signed contract. They left it a month then emailed a few questions over to do with the contract. One was to shoe-horn in an extra set up before the ceremony. To be honest this is the final straw and I feel that I was sold it as simple job and each step of the way it was got more complex hence more editing time. I stupidly agreed to do well below my normal rate as the guy who owns the venue is a friend and I thought it'd be a relatively straight forward job. I should have listened to my intuition as now I want to back out but am worried that since I've signed the contract they could sue. They haven't signed the contract yet but I'm sure this makes a difference. Does anyone have any experience of this?