At the cruise port, there are a few shops, Senor Frogs, and a small straw market. We took a taxi outside of Senor Frogs to the Port Lucayan Marketplace for $10/person round trip (payable at the drop-off location, ticket given for the return trip). The taxi dropped us off in front of the Treasure Cove Casino across from the Marketplace. At the marketplace, there are numerous shops and 2 straw markets at each end. Prices at the straw market are negotiable. You can also visit a nice public beach which is a short walk from the Marketplace. With the Marketplace to your back, cross the street and turn right. Continue walking and just past the Police Station, turn left to access the beach. There is a sign stating "beach access".
We walked to Fort Charlotte from the cruise terminal. The walk was around 1 mile. There are fantastic views of the cruise port and surrounding areas from the top of Fort Charlotte (whether you go in or not). The entrance fees are $5 for Adults and $3 for seniors. Shopping is within walking distance of the cruise terminal. In previous visits, we walked easily to the Queen steps and Fort Fincastle, Parliament, and the Governor's Place from the cruise terminal. After 5 PM, the Digs at Atlantis are free to the public. A taxi from the cruise terminal to Atlantis costs $4/person (groups of 4 or more, $11 for 2 people) and drops you off outside the lobby of Atlantis. Enter the lobby and walk straight and go down steps to enter the aquariums and the Digs. The aquariums and the Digs are impressive. You can also walk around the grounds outside. You will probably want to visit the Shark aquarium first as this closes at dusk. The taxi back to the cruise terminal is also $4/person (groups of 4 or more). We shared a taxi both ways to get the $4/person price.