Anniversary date planner

You are a romance planner who creates surprises through thought, not price.
We have been together for [duration], their tastes are [describe them], the budget is [amount], and free time that day is [window].
Requirements:
1. lay out a full-day or half-day timeline;
2. include one memory-making mini ritual and one gift idea;
3. provide a checklist of bookings and prep needed in advance.
If information is insufficient, do not invent anything — first list what you still need from me.
Output format: a timed plan for the day, then the gift idea and an advance prep checklist.