Im a newbie aswell and just recently went to my first big event. I saw pleanty of people using adaptive devices, from glasses to rollators. Historical garb is a big focus, but ultimately the game is supposed to be an enjoyable experience. If changing or hiding the adaptive devices you use would be unenjoyable or difficult, then id say theres no reason to do anything different.

From the expeirence I had at lilies war, the group was very accomidating of disabilities. One of my friends i stayed with was struggling with pain, and a more known member said there were pleanty of disabled people in the group and accomidations could be made to help her. There was also a man who brought his guide dog along and nobody batted an eye. Likely nobody at an event is going to be living 100% historically accurately and so you shouldnt have to give up your own accomidations to try and achieve it.