I probably going there next month and wonder if AUD300 is enough for food as well souvenirs for 6 days. It's a package trip:

Day 1: Arrive Brisbane, Seat In Coach transfer to GOLD COAST Hotel. Pax to make own way to join Seat In Coach , AQUA DUCK TOUR
Day 2: Full Day Tour MOVIE WORLD with admission & return Seat In Coach transfer (Breakfast)
Day 3: Full Day Tour to SEA WORLD with admission & return SIC transfer. (Breakfast)
Day 4: Seat In Coach transfer to BRISBANE airport for departure. Arrive SYDNEY, SIC transfer to hotel to check-in. Use 3 in 1 pass to enjoy SYDNEY AQUARIUM & SYDNEY TOWER OZ TREK TOUR with MONO RAIL day pass at your own leisure time. (Breakfast)
Day 5: Full Day Seat In Coach city tour with CAPTAIN COOK LUNCHEON CRUISE (Breakfast & Lunch)
Day 6: Full Day Seat In Coach to BLUE MOUNTAIN with Wildlife Park. (Breakfast)
Day 7: Seat In Coach transfer to airport for departure. (Breakfast)