The whale watching cruise I'd booked was a relatively small group of about 30 people. I've never been a big fan of large crowds and I thought for an experience like this I didn't want to share it with a thousand other people. The vessel was a nice size and quite comfortable, so no complaints there. We had a lovely, smooth ride out while the crew served a buffet lunch on board. There were the standard safety talks, showing where the life jackets were stowed, etc, etc, but they didn't last long.
It seemed like no time at all before the boat started slowing down as we approached the area where the whales were reported to be. Everyone scrambled up on deck in a jiffy! In hindsight, I can't believe I didn't bring a pair of binoculars - I only had my camera. The first time I saw that whale fluke break the surface of the water and send a huge spray of water into the air, I felt the excitement ripple through the group around me. The clicks and whirs of cameras was almost deafening :-). Ironically, at this point, unless you had a super duper zoom lens, all you'd see on your photo would be a huge expanse of blue with a small black dot in the middle. Trust me, it wouldn't look nearly as close as this picture below!
The time seemed to just fly by, and before long we were headed back to shore. The return trip was a bit choppy due to the wind picking up, and we ended up with a few passengers looking decidedly green around the gills. If you're the type who has issues with seasickness, I would suggest taking something along with you, just in case.
If you're looking for something else fun to do in the area, have a look at our page on Brisbane, Area Activities and Tours. There's no end to your options -- the hardest part is deciding exactly what you want to do!