I thoroughly enjoyed this tour. The onboard commentary was very interesting - he knew much about the buildings on the harbour and added interesting tid bits about any significant buildings. The boat was quite nice and spacious. I'd even say somewhat luxurious.
The food was good value. The bread was surprisingly the hit of our group, not to say that the rest was subpar as the prawns kept us happy! Note that it was a cold buffet lunch so don't expect any hot dishes.
I'd recommend to go upstairs to the sundeck if the weather permits. The view is breathtaking, especially on the way to stradbroke Island and on the way back to Surfers paradise.