We are doing an 8 day campervan tour through the North Island at the very beginning of July with our 3 kids - ages 13, 11 and 7. We would like to choose 2-3 "adventures" sprinkled across the many awesome free/low cost activities in NZ like their beautiful playgrounds, regional parks, hikes, etc. I'd love advice on whether or not the following 3 activities are "worth it" and have some additional logistical questions as well.
1) I have read about swimming with the dolphins and it seems that the company "Explore Group" has a tour of the bay and swim with dolphin tour that is active over the winter. Does anyone have any experience with this over the winter? Is it too cold to be enjoyable? I know it's highly weather dependent, so is it necessary to book in advance?
2) JetBoat at Huka Falls. This looks like fun and puts us closer to something so beautiful. Is this a good idea in the winter (early July) and is it necessary to book in advance?
3) Glow Worms at Waitomo Caves: I know there's a regular tour, but was also curious about the blackwater rafting with Kiwi Cave Rafting. I've read great reviews here, but wondered if anyone had any thoughts about whether or not this would be appropriate or too scary or difficult for a 7 year old? And is it too cold in July to be enjoyable?
Thanks in advance for any help you could offer!