Under the Sea - Journey of The Little Mermaid at Magic Kingdom averages a 19-minute wait, but timing makes a huge difference. The data shows waits are shortest around 11AM (5min) and longest around 6PM (31min) — a 26-minute difference just by choosing the right time.
Sunday is typically the lightest day of the week with an average wait of 13 minutes. Avoid Wednesday if possible — waits average 22 minutes.
Pro tip: Arrive at Magic Kingdom before opening and head to Under the Sea - Journey of The Little Mermaid first. Early-morning waits are consistently the shortest across all days of the week.
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