Can you buy tickets there or do you have to buy on line?

Tickets can be purchased in the Titanic Museum.

You can buy on the day there cost bit more as other people have said but its worth a visit if you are interested in it

Online better. Also if you decide to buy them there, don't forget to take your coupons. Also they do charge extra $5 for audio box.

Online is a little cheap than buy ticket at the cashier

Yes and they offer discount for the dinosaurs exhibit next door when you buy there

You can buy tickets at the front desk

Both

You can buy them there

Either one. Most hotels can get them for you too.

Just buy it at the location, shouldn't be any line.

Yep yep yep

You can do either. :)

Yes.

Either or