I wouldn't hesitate for a minute to use a wheelchair if it meant I could get out and enjoy things more. Just because you are able to walk doesn't mean you don't "need" a wheelchair. People can need a wheelchair for all kinds of conditions, including ours. I use the electric ride-on shopping carts at the supermarket and K-Mart, because without them I couldn't shop (or it would take several more days to recover). At first I felt self-concious about walking in and taking one, but no one has ever seemed to question it. I also use a wheeled walker with a seat when I need to.
A wheelchair or a walker isn't anyone's idea of a fashion accessory. I think most people assume that if you're using one, you have a reason for it. And actually, I've found that many people are helpful and considerate when I'm using them, like asking if they can help me reach something.
If it's a question of not wanting to see yourself as disabled, well, I think that's like someone who doesn't wear glasses or a hearing aid when they need them; it's vanity. And I think it's a shame to let vanity stop you from enjoying everything you possibly can.
When I wasn't quite as ill as I am now, I used a rental mobility scooter to go to the county fair and to the Highland games and to a conference. I'm so glad I did, because I haven't been able to do things like that since. I would hate to have missed my (possibly) last opportunities to have those experiences. So ask yourself, if you knew you would be housebound next month or next year, what would you do?
Go for it! Do whatever it takes to enjoy what you can, while you can, is my advice.