Following encounter with stag do was on a boat tour in Germany. Female tourist with toddler daughter was sat by herself and a group of male British teens on exchange trip came and sat at the same table which was in front of us.was about to ask her if she wanted to join us in case they were loud or upsetting or something. Instead they were charm itself, spoke politely to her, played gently with the little girl gave her some of their food helped her with ordering in German. Over to you.