It does make it easier in the sense that you are pretty much assured of getting the leave to remain and that you will have no problem at the airport when you come over.
But the visa process on this end is a day long event. You will have to go to Croydon (or Glasgow, I think) once you are married and then again a year after you are married. SOme people do this by post but you will be without your passport, etc for several weeks, if not months before they get it stamped and sent back. Many people chose to go to the office and spend the day getting the visa.
We arrived both times in Croydon before 8, and just barely got done by the time they closed at 5. It's an extremely long process, you sit in a very big room with tons of people from all over the place, and you can't leave the building once you're there or you lose your place in line. Definately no fun.
As long as you get there earlier tho, you should be able to leave with visa and passport in hand.