Fortunately you are going to a far nicer stop than Brisbane, before Covid we would go to the Sunshine Coast twice a year. The Tender will drop you at the Marina Complex near the Aquarium about a 5 to 10 minute walk to the centre of Mooloolaba. Suggest you hire a car for the day and drive the 30 to 40 minutes to the Zoo. Rental will only cost about $60 to $100AUD for the day, and if you can find another couple it's a small outlay. Don't leave without trying the Mooloolaba King Prawns with a Pint of 4X Gold, Lovely.