I've worked in retail pharmacies in multiple states. This happens more than you'd think, and in none of those stores did I ever see any of my employees point, stare, laugh, or mock. We tried to help / accommodate the person and their helpers the best we could while maintaining as much dignity as possible for them.

Before plane rides, long car rides, concerts - I buy depends. It's mortifying in the moment, both buying them and the first steps wearing them in public, but it's worth it - to be able to keep having those experiences without it being ruined by the what-if's and panic.

Best of luck to you.