Did it today while taking 4R. It went really well. I took the PS, VR, and PS back to back w/ about 10 minute breaks and only started to wear down toward the end of BS when my phone was blowin up (i use it as a timer so i notice whenever someone calls), and one some girl came and sat at the table next to me and started to use a kid's calculator that BEEPS EVERY TIME SHE PRESSES A BUTTON. so i moved, messaged a friend back, and still finished on time!
and i only had to pee in the middle of PS.
ctgxant - the drinks im talking about are real small, maybe the size of a small precription bottle. theres one called 5 hour energy that you can get at 7-11 for like three dollars but you can get a similar one at walmart for about a buck. find them over in the sports supplements near the pharmacy - theyre by the protein bars.