I took my mum to Negril a few years ago and she, too, was an avid gardener - always outside in the garden. The funny thing is that once she arrived she became so relaxed that she would sit in a sun chair in the garden and read while she watched the birds and flowers. She got the biggest kick out of the staff trying to get mangoes from the highest branches. She did ask about going to Rick's (not my favourite) and then we went to LTU for dinner. I wouldn't worry too much about trying to keep her "busy". Just wait and see what she would like to do. IMHO