Longest for me, although I've only ever had 2 sessions in my life so far lol, would be 5.5 hours for the start of the wing on my back, and I took two or three 2 min breaks. It was definitely crazy, just sucks because we ran out of time, so next session I'll definitely be trying to go for longer!
My wrist tattoos are my sons names and were my firsts, and the second pic is my unfinished wings just after getting it done (a few weeks ago now). Ill have to take a better picture now, but it looks great!!