Can I install an outlet near the ceiling of a pavilion?
You can put a plain outlet anywhere you please. 

The reason this is an issue is that in certain locations, the outlet needs to be GFCI protected.  And you can't put a GFCI test/reset button that high.

So if GFCI protection is even required, take advantage of a feature of almost every GFCI device, called "Load", which allows it to protect plain devices downstream.  That is obvious when dealing with GFCI+breakers or GFCI-only ("deadfront") devices.  But GFCI+receptacle devices can do it too!   So you just install one of those in an accessible location, and you're all set.