These services are exempted from service vide Notification No. 25/2012-Service Tax, assuming you dont have liquor licence
Services provided in relation to serving of food or beverages by a restaurant, eating joint or a mess, other than those having (i) the facility of air-conditioning or central air-heating in any part of the establishment, at any time during the year, and (ii) a licence to serve alcoholic beverages
Thanks. View are personal and based on limited facts.