Amonk, local practice is to face outward. Usually the sexes are separated. There will probably be some sort of barrier between where you do your business and the outside world, although it may only be a short wall you walk around. There are truly horrendous facilities here - as Raoul so kindly shared, but most are tolerable.
"Holding it" is not an ability I have been blessed with. When you gotta go, you gotta go. Carry scented tissues and wear hip waders and you'll be okay.