Yes, as much as possible! Once I went to PV and burned up, once I went and got a golden tan...didn't want to gamble with this trip or have strap marks with my strapless dress so I made the sacrifice. I got to PV 3 days prior to the wedding. The first day I arrived at like 4pm so there was no problem.
Sherry is absolutely right, the pre-wedding days are busy. The 2nd day I did a site visit from about 8am-4pm, prime sun time! I wore a strapless dress with a hat and tons of sunscreen (for real, I sprayed it on every 15 minutes!). I did some swimming in the ocean and stayed under the covered part of the boat coming & going. No burn/lines.
The 3rd day we went downtown to shop/run errands/meet up with guests and I wore a tank top. Just from going in/out of stores I caught some sun and had minor strap marks despite being careful. Luckily they were gone by the wedding day. The wedding day I got in the ocean too but briefly and carefully.
If it weren't my wedding I would have been in the sun all day each day but there really is limited time. I didn't have time to get in the hotel pool until after the wedding just because of the schedule. The time I had I was conservative. I feel like you can't re-do your wedding pics so consider how your skin reacts and if tanlines matter that much to you. I didn't want to count on Photoshop, I just wanted the pics to be how I really looked that day so I was careful.
You don't need to stay inside just be safe and smart. Good luck ladies!