What to bring and what to sort out for weddings and formal occasions, from the guest side and the planning side.
Formal occasions have a long tail of small requirements. The outfit is decided weeks ahead; the cufflinks, the card, the cash for the bar and the shoes that survive a dance floor are decided at eight in the morning on the day, which is when things get forgotten. These checklists cover attending and preparing for ceremonies — what a guest actually needs on the day, and what to have arranged beforehand. Dress codes and gift customs differ enormously between countries and communities, so the lists focus on the practical items everyone needs and flag where you should check what is expected rather than assuming one convention applies. Sharing the list is useful when a couple or a family is getting ready together, since it keeps the "did anyone bring the rings" category of question off the morning schedule.
No. Gift customs, dress expectations and the running order vary widely between countries and communities, so the lists stick to the practical items a guest needs regardless and flag the points where you should check what is expected for the specific event.
Comfortable shoes to change into, a phone charger, and cash. Venues are often further from a cash machine than expected and the day runs longer than the battery does. All three are on the list because they are the ones people mention afterwards.
Yes, and it is one of the more useful cases for it. When several people are getting ready in different places on the same morning, a shared list settles who is carrying the gift, the documents and anything else that only needs to exist once.