In natural speech, an unstressed vowel may be omitted in words such as different /ˈdɪfrənt/ and family /ˈfæmli/. Careful /ˈdɪfərənt/ and /ˈfæməli/ forms are also acceptable. Read: Different families will join the cultural programme. Elision is optional and must not remove a stressed vowel or make the word unclear.
A youth-programme participant needs clear communication, reliability and curiosity. For example, a host should explain a route and check understanding rather than talk quickly. I would practise giving directions to the library, then ask a partner to explain the route back to me. That checks whether my explanation actually works. Experience working in a group is useful, but willingness to learn matters too. When a visitor gives an unfamiliar answer, I should ask respectfully rather than assume that the person represents a whole country. In my opinion, respectful listening should be valued as highly as confident speaking. I can prepare by finishing my assigned task on time and learning how to ask for clarification. What other skill would help a quieter participant contribute? We should make room for written ideas as well as spoken discussion.
Follow-up: Must every host be an experienced public speaker?
Response: No. Reliability, preparation and attentive listening are useful skills that a participant can develop.