If you decide not to clip the wings, there are several things to be very aware of (may seem obvious to other parrot owners).

Do not turn on ceiling fans.

Make sure all doors and windows are closed.

Watch them because they chew things. Like electrical cords. Also, they can decide to take a nap (snuggled in laundry or pillows) and someone can end up sitting on them if you don't know where they are.

When I had my parrot (I do miss the guy) he liked to hang out on my shoulder. I'd go about my chores with him happily chatting at me the whole time. Occassionally, though, he'd get quiet, even once he fell asleep. Once when he was not in a chatty mood, I forgot he was there and I just walked out of the house. I was on the porch when I realized, with horror, that he was still on my shoulder. He took off. Being flighted, he flew across the street, then into the top of a large tree, then around the neighborhood. We followed him around (we could hear him screech) for 8 hours, and amazingly at dusk he flew into a low tree to roost. My ex got the ladder and I was able to grab him. Usually escapes don't end up that way. If he'd flown one more block, he would have gone into a National Park and we never would have found him, and he'd probably had been an easy dinner for an owl or hawk.

I decided then that it was much better to keep his wings clipped. But as TSPoet says, some people don't clip.