Teachers plan in terms, not in weeks. School trip searching concentrates at the start of each term for visits that happen months later, and a farm visible then is on the shortlist before any family has thought about a weekend.
The curriculum is the search. A teacher looking for a visit to support a particular topic types the topic, and matching that language reaches the person who actually decides where a coach goes.
Families search on the day. Somebody with restless children on a Saturday morning is looking for somewhere to go now, and opening hours, prices and whether booking is needed are the whole decision.
Parties are planned with a date in hand. A birthday at a farm is searched weeks ahead by a parent who has already chosen the weekend, and a page with the package and the price wins that booking quickly.