We usually carry on with some of the indoor attractions - or - if it looks like it will last a while, head back to the resort and have some down time. We don't like to get wet, though!
Do you spend a whole day at the parks or have a midday break and head back in the evening?
We always have a break. We (try) to get to the parks early and then head back for a rest after lunch. We then go back to a different park in the evening.