Should we bring rain gear just in case it rains?

As far as I know you may be outside if there is a light drizzle but you will not go outside if its pouring or there is thunder/lightning. Plus you will have to walk from your cabins and the dinning hall. So a raincoat would be a good thing to pack! The coat is probably better than an umbrella because you will have to hold the umbrella up the entire time your outside. Rainboots could also be used as water shoes if you are in shallow bay water but they might get dirty (then just wipe them off).