Nope! I got married at 1. On Saturdays in our church weddings have to be before 4:30 mass. I wanted to have it at 2, but our wedding was also one week after the clocks changed and it started to get dark around 4. So it was a race for sunlight
At first I was worried about our guests, but they all figured it out. Cocktail hour started at 5:30 and it gave people a chance to check-in and whatnot.