Who
Who is coming, who is a maybe, and who is out. The plan should not pretend the roster is settled if it is not.
A trip usually needs agreement before it needs an itinerary. Dates, vibe, place, and budget are easier to hold when they live in one brief β not in a chat that keeps moving.

Most planning tools assume you already know the trip. In real groups, that is rarely true. Someone is in. Someone might be. One person has a weekend. Another is thinking of a week in June. The chat is full of energy and almost no current decisions.
Alignment is the missing step: get the group onto the same brief, then start collecting ideas and building days. Start an alignment for free, share a link, and let everyone answer before the group starts booking.
Five questions cover most of what a group needs before a day-by-day plan is useful.
Who is coming, who is a maybe, and who is out. The plan should not pretend the roster is settled if it is not.
Which windows people can actually do. A shared view of dates beats another poll that disappears.
Rest, food, hiking, a city, a house. The kind of trip, before anyone argues about a specific hotel.
Places people can live with, not a locked destination on day one.
A range per person so later stays and flights are not a surprise.
Quick is whoβs in, vibe, and when. Weekend away adds where and budget. A bigger group trip also asks about priorities and constraints. Friends can answer from the shared link without creating an account.
The same trip continues on the web and on iPhone. See what the web companion can do, or the step-by-step.

Friday to Sunday, four answers, no extra chat poll.
Longer tripsPartial attendance, date ranges, and real constraints.
StepsStart, share a link, answer, see overlap, keep planning.
On the webWhat you can do in the browser, and what stays on iPhone.
After the briefCollect ideas and keep one current plan once you are aligned.
DatesPaint availability and see overlapping windows.
It means the group agrees on the basics β who is coming, when, the kind of trip, where, and roughly what it should cost β before anyone builds an itinerary or books.
Who is in, which dates can work, the vibe, a shortlist of places, and a budget range. Those five answers make bookings much easier to keep.
Yes. Friends can answer from the shared link without creating an account. You can also start an alignment on the web without creating an account.
Start an alignment for free, share a link, and let everyone answer before the group starts booking.