Mějte se hezky.
When to use
This is a versatile closing phrase used when parting ways, suitable for service staff, new acquaintances, or anyone you want to leave with a positive impression.
Formality
This phrase uses the formal 'vy' (you) form ('Mějte se'). It's polite and appropriate in most situations, from casual to semi-formal. If you were speaking to someone you use 'ty' with, you'd say 'Měj se hezky'.
Grammar structure
It translates to 'Have yourselves nicely'. 'Mějte se' is the imperative form of the reflexive verb 'mít se' (to be, to fare - used in expressions of well-being), conjugated for the formal 'vy'. 'Hezky' means 'nicely' or 'well'.
Notes
A warm and polite closing, wishing someone well.