Each location has its own special hot stamp. Depending which one you want to get, you will have to go to said store to get it. If you are just doing initial, then any LV store will do. Soho store tends to have local clients so you will find it less touristy. 5th ave store is obviously on the opposite end of the spectrum. There are also smaller ones at bloomies, saks, Macy’s, etc. but those will have less stock depending what you are looking for. 5th ave store top floor has a dedicated repair service so that’s where I would take your bag to if you are looking to get your bag checked out. Just head for the elevator when you get into the store. You can also order spare parts as long as you have the item in your profile (cough cough luggage tags, straps cough cough)
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