IIRC, Amazon has an option to delay delivery and you get some credits.

Prime delivery day is awesome, especially sharing the same house with someone that orders excessively. We tend to order things throughout the week, then have to deal with a mountain of shipping waste. Prime delivery day condenses the orders as best possible. It's not like I need every single item within 24 hours...

Somewhat tangential, but can't help sharing: It's counter-intuitive, but you should feel good ordering things with same-day delivery, even if you don't need it and it "feels" wasteful. Energy-intensity of delivery basically boils down to "did it go on an airplane?". If so, it has a ton of emissions associated with it. If not, it doesn't. And (of course) the less distance the item has to travel, the less emissions. If it can be delivered same-day, then it's not going on an airplane, and it's not traveling very far.

Totally get what you're saying, but the big motivator for us is to literally deal with less boxes that need to be broken down.

One weird thing is that it seems like they play a bit fast and loose with the actual meaning of this. Several times I've ordered for "Prime day" because I didn't care and then later got a notification because they just shipped it early anyways. No real complaint per se, but it was still odd.

Yes, you get digital credit. It is great for buying Kindle books or renting movies.

Oh, how?

You need to have Prime, and it usually requires you to have 2-3 items in your cart.

But if they're items that would normally ship in 1-2 days, then it will provide a credits option if you have an Amazon Day (day of the week for combined deliveries) selected and that Amazon Day is at least 3 days in the future. It will also sometimes instead show a "no-rush shipping" option that is usually something like 5-7 days out, with credits.

I'm not going to lie, I almost always select it (even constantly changing my Amazon Day to be at least 3 days out from today), and I'm pretty sure I make back my Prime membership fee and then some. The credits are usually $1.50-$4.50 per shipment, expire after 3 months, and can only be used for digital purchases like Kindle and videos.

Slow delivery for Galaxus means in a couple of days instead of tomorrow.

So far I got the same "day after tomorrow" with that option. But it just seems a nice box the check when it doesn't matter.