Photobucket may be automaticaly sizing them to fit. Don't know all the details. You can go back and edit your photos up or down size wise. Then maybe try them out in the test section.
I'm sure y'all had a great time. My girlfriend got us a trip with JD for my birthday. It was an awesome time with a great guide. Been talking about the trip everyday to anyone that will listen. I'm gonna have to call JD tomorrow to setup another adventure.