Offer only valid when making an online booking in advance and quoting ‘COSMOBDAY’ in booking notes. Offer entitles the person celebrating his or her birthday to have one free lunch or dinner up to 2 days before or after their actual birthday, when accompanied by at least one full paying adult. To redeem the offer, please present proof of DOB on your driving license or passport to your server before being seated. Offer is for food only and excludes drinks. Cannot be used in conjunction with any other offer. This offer is subject to availability and COSMO Glasgow reserves the right to withdraw or alter this offer at any time without prior notice. Offer valid at COSMO Glasgow only.