Yes you can. You come to the convention and look around until you have decided wich artist you want to tattoo you. If he or she is busy at the moment you book an apointment later.
Yes, but you have to book directly with the artist yourself.
Friday and Saturday you have to be 18 years old to get in after 19.00 hours.
Children under the age of 15 has free entrance when accompanied by adult.
You can buy tickets at the door or in advance. See Tickets for more info on buying in advance.