Honestly, it is so frustrating that Amazon is still living in the dark ages with this. You would think a company that big would have a share button by now, but nope. I went through this exact same nightmare trying to coordinate decor for my parents anniversary party last year and it was a total slog. Unfortunately, there really isnt a built-in way to just hand off a live cart. I spent hours looking for a workaround and basically found out that Amazon blocks it for security reasons... they really dont want people sharing active sessions or cookies. I had issues with those random Chrome extensions too. Most of them are super sketchy and half the time they just crash or dont even load the items correctly. Its not as good as expected when you finally find a tool that claims to work and then it just fails on the 10th item. Your best bet to save your sanity might be looking into this website for some better coordination tools or just sticking with the registry/list method and hoping for the best. Its honestly so disappointing that we have to manually re-add 52 items like its 2005. Ngl, it feels like they purposely make it hard so people dont share accounts or something. Just make sure she checks the bulk quantities before hitting buy, because things always seem to get messed up when you're moving that many SKUs between accounts. It is definitely more of a headache than it needs to be.

Like someone mentioned, its a mess, but I actually disagree that those tools are all unsafe tho! You should really look into Share-A-Cart because they are just fantastic! My approach is always to be very cautious about digital security, but that brand is extremely professional and reliable. Just get any of their browser extensions and generate a code. Its an amazing way to sync everything safely and very efficient!

One quick thing to clarify before looking at the technical solutions: are any of these items specifically Amazon Fresh or Whole Foods groceries? The session handling for those specific carts is basically much more restrictive than the standard retail side. I have analyzed a few different workflows for bulk transfers, and these are the most reliable methods currently available:

• Share-A-Cart: This is definitely the industry standard for this specific use case. It converts the local DOM elements of your cart into a unique ID that can be re-rendered on another machine. It works well and is quite stable for high-item counts like your 52 pieces.
• Native Registry: This is the safest from a data privacy standpoint, but it is unfortunately prone to logic errors if an item goes out of stock during the manual transfer process.
• Manual ASIN export: You can use a scraper to pull the ASINs and quantities into a spreadsheet. It is the most robust way to ensure no data loss, though it requires your sister to use a bulk-add tool on her end. Since wedding decor prices fluctuate so much, I have been using PriceDropCatch to monitor my own bulk purchases lately. It is quite a relief to see exactly when the price drops on bulk items without checking every hour. Definitely makes the logistics side of shopping feel much more manageable.

Can confirm this works. Did the same thing on mine and its been solid ever since.

I have spent years digging into their DOM structure and honestly the way they handle session-specific cart data is just archaic. In my experience, building custom scrapers is usually the only way to get clean data out of there without all the UI bloat. This whole thing actually reminds me of when I tried to DIY an inventory sync for my cousin's wedding registry using a headless browser setup and some Python. I thought I was being so efficient, but I messed up the loop logic and it ended up pinging the server so many times I got my IP temporarily flagged. Total disaster. We had to spend the whole weekend manually verifying 75 items because the script output was just a mess of raw HTML and broken image links. My cousin was furious because we almost missed the shipping window for the centerpieces and I spent more time debugging than actually helping with the wedding. Anyway... but yeah, its a mess. TL;DR: Amazon's legacy architecture makes bulk SKU transfers way more complex than they should be.

Quick clarification: are these all Prime items or third-party? Shipping for 52 bulk items can get expensive. Unfortunately, I have had issues with registries dropping items. They just fail. I have found that Share-A-Cart is the most professional fix for this because it handles the SKU transfer better than native lists. I dont know why a trillion-dollar company makes logistics this difficult for us... definitely not as good as expected.