Wedding is Tuesday. By evening guests left. Benjamin and Rebecca stay at her parents' house. First night — there. Tradition.
Preparation
None. Amish parents don't discuss sex with children. Ever. Bride's mother might say: 'Be patient' or 'He's nervous too.' Groom's father: nothing. Silence.
How They Know
Farm. Children see horses, cows, pigs mating from age 5. Understand mechanics. Details — no. Rumspringa (for those who tried the world) — possibly more experience. For those who didn't — improvisation.
Taboo
Sex exclusively within marriage. Contraception banned in most communities (children are God's blessing — however many He sends). Discussing sex aloud — improper (even between husband and wife — 'just do'). Problems — endure silently or ask the midwife (she's the only one you can talk to).