Some places have the table number encoded in the QR code. Others you type it in. Everyone at the table could put in their own orders on their own phones if they wanted to, or one person could enter them all in. For the former it makes it very simple for everyone to only pay for their own things too.
Honestly, as someone with young kids it's been an absolute dream. We can scan or tap as soon as we get to the table, one of us can quickly fire off some order for food and drinks for the kids, and more often than not things have arrived before we've finished unpacking the coloring books and other things to keep them occupied. At which point the adults can sit down and chat, which is usually the main reason we're out, and order at our leisure.
Honestly, as someone with young kids it's been an absolute dream. We can scan or tap as soon as we get to the table, one of us can quickly fire off some order for food and drinks for the kids, and more often than not things have arrived before we've finished unpacking the coloring books and other things to keep them occupied. At which point the adults can sit down and chat, which is usually the main reason we're out, and order at our leisure.