How to say “Change conditions: non-refundable booking, full payment before arrival and additional charges for any change after confirmation.” in French

In French

Conditions de modification : réservation non remboursable, paiement intégral avant l'arrivée et frais supplémentaires pour toute modification après confirmation.

Change conditions: non-refundable booking, full payment before arrival and additional charges for any change after confirmation. in other languages

What Change conditions: non-refundable booking, full payment before arrival and additional charges for any change after confirmation. means
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