I'm kind of in between on the "Spray and pray" mentality. I like to plan out shots, but taking a lot of shots, and I don't mean on burst, but just a lot of angles, and overall a lot of pictures can be very beneficial when doing a first time event. I love, personally, shooting weddings on a beach just before sunset, but that is weather dependent, and mid afternoon, the Sun must be part of what you are thinking about when composing. Go to the location, get some practice, and maybe do some pre-engagement shots with the bride and groom, even at that same place. It will give you more photo's for their memories after it's all said and done, and you will get more practice with that setting and subject. \\
On that note, I do prefer to shoot weddings on the beach around sunset, but that is about it. I am not a fan of shooting weddings in general. Just my personal taste though.
Best of luck.