the RCC is located at C2 and offers (limited) continental breakfast (bread, butter, jam, cheese, coffee) and free booze.
As a (UA PremEx) StarGold you have access to that international RCC. You can also access LH lounges (all business class lounges, also some/most Senator lounges = those with the StarGold sign outside), with a wider drink assortment but less breakfast food-offer.