Overall, I loved this. The staff is very pleasant and accommodating.
I'll update this a bit later with a detailed blog post.
In brief, it's pricey but a unique experience,making it worth the value.
Lindsey and I did the exploration dive, which was $1000 total, and added the photo package for another $100. So all in was $1100. I then saw on Facebook there was a Valentines Day special, after we left, which was 10% off. I messaged them, and they applied the discount immediately, with no questions asked. This was a good experience.
On thing I would think to consider as a guest is the size of the sub and number of people in it. Know what you want, and ask questions. I was a bit taken back when another group was with us. By all the photos on the site, it looks like it's a private tour, but it's was not. Given we were there as a travel company creating content, I would have preferred to purchase an private option, but I didn't know better and used the available pictures as guidance.