Private instruments and equipment may not be brought onto the fairgrounds and must be left at the depots for a fee of € 10.00 per day.
Personal mouthpieces may be taken into Musikmesse for instrument testing. Please have them marked as personal property by Messe Frankfurt staff at the entrances. The stickers can be removed (residue-free) after leaving the fairgrounds.
For possibly brought instruments and equipment you could get a certificate at the entrances, which entitles you to take the instrument with you to the fair.