For drinks, it'll be Monster, Diet Sunkist, and water (maybe iced tea if I'm feelin' ambitious). Some Snyders pretzel shell things for a snack, leftover pasta maybe, or teriyaki chicken and rice for a meal.
But, if the game is going for a medieval fantasy type setting, then the F word is perfectly natural. Just like the S word, damn, and the C word, they are ancient words, that meant the same thing during the middle ages that they do now.