I realize that everyone has their own preference for excursions, but I am looking for recommendations for excursions in Nassau. My mother who is in her late 70's is cruising with us in early August. She can walk fine, but cannot go long distances. It is best if she can mosey along at her own pace and there are limited stairs. I know some of the tours have long walking tours which wouldn't be good unless it was a slow stroll. She loves to sightsee and she does enjoy history. She's not one to sit in the sun for extended periods. Any suggestions? We will be in port for almost 24 hours. Thank you in advance!!