Iphone 14

Yes.

But be aware you won't be the only one trying that, so not all models and configurations may be in stock by the time you get in and you may need to wait for long time before you can get in the store and buy one. Expect long lines.

Sure. But be aware you may spend hours inline to walk out empty handed. Apple typically has a very limited to sometimes NO supply of new models for walk-in customers. I had a friend do that last year, against my best advice. He waited in line for 5 hours and he didn't get a new iPhone on launch day.