Wedding and corporate hire is the profitable half. Those searches happen months in advance, the decision is unhurried and one booking is worth weeks of street trading, yet most operators write nothing for it.
People search for the food, not the format. Wood-fired pizza, birria tacos or a specific dish is typed far more often than food truck, and the cuisine belongs in the page title.
Organisers are a hidden audience. Festivals, markets and office parks look for traders to book, and being findable by them fills the calendar without any customer ever searching.
Location pages have a short shelf life. A page naming a regular pitch works while it is true and damages trust the moment it is not, so it only pays when the calendar is genuinely maintained.