I would like to report after a four days of committed research and personal sacrifice, that it is possible to average somewhere between 15 and 25 pints of Guinness a day as long as the following variables are in place and consistent.
1. You start early enough
2. You are on a Rugby Tour of Eire with your son's U14s team
3. You limit yourself to Guinness that is in a glass
4. You register surprise that it isn't anywhere near as expensive as you'd been led to believe, but had saved up beer tokens at the extortionate price everyone kept telling you about.
5. You take moist toilet paper with you.
6. You don't mind the fact that after four days of committed research your ringpiece will resemble a blood orange, moist toilet paper notwithstanding.