Not all bathroom issues are the same even under the same diagnosis umbrella, think more like a spectrum. I've had UC for 20 years and every flare can be different. I can start a vacation in remission and end in a major flare. For me there is no rescue med, once a flare stars I require medical intervention to end it.
For me a flare starts with stomach pain and progresses to an urgent need to us the bathroom. At my worse I can need to use the bathroom 20+ times a day. If I'm lucky I might only need to use the bathroom 5-6 times a day. I have found that movement makes the urgent needs more frequent so a wheelchair can help, but then I need someone to push me.
One thing that isn't being talked about is the mental aspect of having urgent bathroom needs. As soon as my stomach starts hurting, the anxiety starts. Can I wait in this line or will I need to leave? If I leave can I make it to the bathroom in time and will there be a line at the bathroom. Because I look healthy, it is hard to get people to let you skip the line. If I have to find an CM to get a bathroom pass that adds more stress because it adds time to getting to the bathroom, not mention the embarrassment of having to tell multiple CMs a day of my bathroom issues.
For me a waiting in a separate area, with my family wouldn't lessen the urgent need to use the bathroom. But it would help lessen the anxiety related to the flare and one of my main triggers is stress/anxiety.