Open Procedure Pursuant To Art. 71 Of Legislative Decree 36/2023 For The Awarding Of The Company Catering Service, Bar And Management Of Drink And Snack Vending Machines For Amounts Exceeding The European Thresholds, With Application Of The Criterion Of The Most Economically Advantageous Offer Based On The Best Quality/Price Ratio (Oepv), Pursuant To Art. 108, Paragraph 1, For A Period Of Two Years.