How fast is it selling out?

Every day we watch the exact moment each Individual Lightning Lane sells out — and whether it ever comes back. From that we compute a single 0–100 demand index per park: more rides gone, an earlier first sellout, and less inventory left all push it higher. 75+ is "red hot", under 25 is "quiet".

It's a true demand signal — not a crowd guess. A park can be moderately busy but have Lightning Lanes flying off the shelf (or be packed with lanes still wide open). This is the read that tells you whether to buy now or wait.