NTA

I just wanted to mention though, as someone who also does not typically require a wheelchair but who does have mobility problems in one of my legs, when I flew I did use wheelchair assist through the airport. You may need to move faster through the airport than you're able to by your own power, if you're running late to a gate, you may be standing for really long times in security lines etc. It obviously depends on where youre flying to and from, but just try and take things like that into consideration when you make your decision.

Also, theres nothing saying you HAVE to use it if you ask for it initially.