I make sure that I have my medication, reading material, water, a snack or meal that I can eat and if I need to stop and use the bathroom I stop and use the bathroom. I have found that many public places have family restrooms now and those tend to be roomier, quieter and more private. I make a beeline for them if they are available. I have traveled to Africa, Latin America, Europe and many places in the US since diagnosis and have found that being very careful about what I ate and drank really helps as well. i got sick less often than many "normal" people.