Scenic Flight is definitely worth doing - Kakadu and Arnhem Land just goes on forever - can really only appreciate the vastness by air. Shame the CD with commentary was jumpy though. Wouldn't recommend more than 50 minute flight as it can get bumpy and quite hot in there. The 2 hour Yellow Waters cruise was sensational - brilliant commentary by ranger. Buffet lunch was great - large range and plenty to go around. Nourlangie Rock and cave art a must see - would've liked to see older paintings though. The guides were entertaining and knowledgeable. The cheese and wine at the end was a lovely touch to end an excellent day!