A Photo Worth 1,000 Questions

This photo is worth 1,000 (or at least nine) questions:

 

1. Is this the best photo of all time?

2. Is this photo staged, or was this just a typical Sunday outing?

3. Who is the lucky party behind the camera capturing this joyous occasion?

4. The shirts featured in this possibly staged outing clearly deserve their own subset of questions:

1. Are these the best shirts ever created?
2. Did Bill and Hunter independently dress themselves that morning?
3. Has Bill's shirt ever worked on anyone? Hint, it probably has (and nobody got hurt)
4. Is everyone else on the boat wearing similarly themed shirts?

5. Who ELSE is on this boat?

6. What is Bill laughing at?

7. Why is Hunter NOT laughing along with Bill? Is he not having fun, or simply focusing in on the nearby marine life?

8. Are these the two best friends that anyone could have?

9. Was our invitation lost in the mail?

We will assume so.