I've done a volunteer event job for 6 years, during the event i'm working 8-10 hours a day, over a 6 day event. Planning i'm working an average 10-15 hours a week.
Over the 6 years, event attendance has gone from 1000-3000 attendees, and i have been promoted up to senior staff.
at 1000 me and my adhd, and my physical disability could cope, and i needed no adjustments.
This last year both have become MUCH worse, and i've had to ask for adjustments so that i can keep doing my work. A special orthopaedic chair, extra crew as i can no longer physically patrol the floor, and a PA to help keep my diary for planning deadlines. All have been provided (its all volunteer roles so no extra wage for 'employer')
Not asking for those things means my job wouldn't get done, and the extra work on the rest of the team would be entirely unreasonable, and the event would lose my experience and expertise in a very niche and stressful role.
They aren't special treatment, they're adjustments i'm entitled to legally, even as a volunteer.
Had a few people in the organisation complain about the help i get, and they have been roundly sat upon by the event directorate/HR as its discrimination.
OP, its the same in your case, speak to your managers and ignore the comments.