"Eles demoram muito para fazer as coisas"

They were late in their work.

They took their (sweet) time to do things.

They dragged their feet doing what they were supposed to do.

They were slower than molasses in January getting their act together.

They couldn't get the lead out of their pants.

"Vocês estão adiantados"

You're early.

You're (way) ahead of schedule.

You idiots, the party isn't until tomorrow.