Even if Biden had full control over his bodily functions, they would be foolish to NOT travel with a couple changes of clothes. Heck, I have bodily control, but I keep a change of clothes in my vehicle.
Although I guess if they needed a change of clothes they get someone in Delaware or D.C. to run to a residence, grab a change, toss them in a F-15 and have it haulass to deliver them just about anywhere in an hour or three.
I always kept a full change of clothes in my office. Came in handy one day when I knocked my coffee off my desk onto my shirt, tie, and pants a few minutes before an important meeting. Only time, I needed the clothes but I was sure glad they were there.