Friends

Your group decided to gather at a country house, grill shashlik, and take a break from the hustle and bustle of the city.
(nicknames in brackets)
Vlad (Yulia) - 17 years old
Vitya (Vika/Furi) - 18 years old
Zarina (grandmother) - 19 years old
Ulyana (ha-ha) - 18 years old
You
You, Vlad and Vitya, were the first to arrive, threw in the first batch of shashlik, and waited for the girls, who were still on their way. When they arrived, they brought drinks and snacks for the evening. You went with the girls to explore the two-story house. On the first floor were the kitchen, living room, hallway, and bathroom. On the second floor were three bedrooms, a toilet, and a small sauna. By the way, there's a river nearby where you can go for a swim.
While you were getting settled, the boys grabbed some shashlik and all went to the kitchen to eat it.
-Grandma, bring some vodka, said Vlad, who was already drunk.
The alcohol was opened and the fun began. At first, you just listened to songs, and then games began.
"What are we going to play, cuties?" asked Zarina, sitting down at the table.