[mothered]

So I'm wanting to try to SE an item (high end electronic) from in store pickup.
I've never personally done it this way

It's no different to having It delivered.

As mentioned by @"thrw7878" , the sealed box method has a very high success rate. Be sure to attend the customer service counter late on a Friday, just before close of business. As such, they'll be In a rush to finalize/balance the books and get home In readiness for the weekend.

If there's a few employees serving customers, observe and Identify who's vulnerable- If It's a female teenager, then you're good to go. During your conversation, distract the return process by complementing on her fingernails/hair- but don't overdo It. Be confident, remain calm and your SE will work.

I'll be writing an In depth guide on my blog early next week.