The Western Civic Amenity Site has extra staff on duty this weekend to cope with overspill from Douglas.
The Middle River Civic Amenity Site has been closed while a row about who should run it continues.
However, the Western site may also close if it becomes too full of waste or overcrowded with visitors.
"He enjoyed hearing the Manx national anthem!": King greets guests at Government House
His Majesty meets representatives of the Manx community at Garden Party
Crowds gathered in glorious sunshine to see the Monarch
Live blog: King Charles visits the Isle of Man
Updates from the Lord of Mann's first visit to the Island since ascending to the throne
King speaks of Island's 'enduring partnership' with the crown
King Charles III spoke in Tynwald this lunchtime