Luke,
4 drinks is easy enough. 2 drinks in the kitchen or by the grill, FEED HER, 3rd drink with dinner, 4th drink after in hot tub or in living room or kitchen. As for convenience store, get her naked (Hot tubbing or skinny dipping), back in house, click on Jeep. She'll be in a towel in front of the store. Just "offer $20" and she'll be naked in the car. Voila! Once you head for the Jeep, drink a beer, she'll then offer sex in the parking lot. Don't grab her breasts! You're having sex! Good luck!