Good choice Colleen. I've spent a lot of time on both St Lucia and Grenada. Much prefer Grenada.
Take your handheld vhf with you and listen in to the Grenada Cruisers Net (http://www.noonsite.com/Countries/Grenada/grenada-vhf-cruiser-s-net-radio-information) and you'll find out what the yachties are up to that day. You and Don should be able to join in with some fun events and maybe even get out on the water.