Celebrity Solstice Shore Excursion to Christchurch's Gateway to Antarctica/Aviation

Has anyone done the Celebrity Solstice's shore excursion "Christchurch's Gateway to Antarctica and Aviation Experience"?

We are going to book this tour and wonder how long we have at this place before going to the aviation experience.

Do they set a time limit and can you do what you want or is it planned for you. Any help would be appreciated.

I'm interested in responses to this too. I'd love to do the Antarctic Expetience, but not so much the aviation part of the tour

You can book the Antarctic experience on your own

http://www.iceberg.co.nz

Thanks. We've booked a car for this port. More wondering if it's possible (sensible) to travel this far on our own on such windy bad roads out.