Help us with ideas for all inclusive resorts!

Me and my fiancé have rarely traveled and never outside of the US. We’ve decided that we want to go to an all inclusive resort for our honeymoon. We’re 25 and have 2 kids so adults only is what we’re looking for. I’ve been looking at some of the Sandals resorts but have seen mixed opinions of them. I’m open to any location but we were looking at Jamaica and Saint Lucia as options. We want somewhere laid back and relaxing but where we also have lots of opportunities to do activities. Not looking to spend over 5,000. We’re paying for our wedding by ourselves and can’t really afford much else.