I believe you are best getting the metro/train rather than the ferry.

I've no idea. RTA are the company that manage the ferry so if I were you, I'd go to their website, find the contact section and email with them right away. There are only 2 or 3 ferries so when they are fully booked there will be no other options left so act right away.

I’m sorry but I cannot see the ‘round trip for 50dhs’ anywhere on the list of ferry prices on the Dubai Ferry website.

We took the 11am ferry from Ghubaiba ferry station and it got to Dubai Marina ferry station at about 12.50pm. However, we were only at the Dubai Water Canal ferry station (kind of half way) for a minute or so as no passengers disembarked or embarked. I think you could be cutting it a bit fine.

Hi. You can surely get good photos of the atlantis. For an even better experience or enhanced quality photos, suggest you to use a dslr or digi cam especially on the ferry. You will be thrilled by the better quality photos and the unreal shots.