With Season 4 of the Game of Thrones behind us, we realize that people only use the toilet in movies when the plot demands it. In fact, without doing a count, I suspect people have sex more often than they urinate in movies. Defecation is even more rare, probably because, as Tyrion Lannister discovered that day, Lord Tywin Lannister did not, in the end, shit gold.
Occasionally, a character will stop along the way for a bathroom break, but while many of us, especially as we age, can have our lives disrupted by overly frequent pit-stops, movie characters seldom have that weakness.
Had he worn a Stillsuit, he would have had an even better batsuit.