One Fish, Two Fish, Red Fish, Blue Fish

In that time, you could instead

• Ride Harry Potter and the Escape from Gringotts5 min · source
• Ride the Hogwarts Express one way5 min · source
• Get heckled by the Knight Bus shrunken head5 min · source

What it's usually like

Typically ~5 min. Quietest around 8 AM (~5 min), busiest around 6 PM (~10 min).

Reliability: 76 unplanned closures on record over 92 days — usually back within ~65 min.

Typical standby from 10535 of our own readings over 92 days — it only gets sharper as the archive grows.