No, some team members can elect not to participate in the opening ceremony.
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The Canada women's Olympics ice hockey team members took home the gold medal, while the United States of America women's Olympics ice hockey team members won the silver medal, and the Switzerland women's Olympics ice hockey team took the bronze medal.
Yes Israel does have a winter Olympics team... They have a small team comprised of only 2 members, Alexandra Zaretsky and Roman Zaretsky who are participating in the ice dancing event.
U.s.a
Cigarettes
a team called "Unified Team" won the most medals
The Winter Olympics weren't held that year.
The competitors competed as individuals, not as team members of city-states.
Cuba
As of today (1 Feb 2012), Great Britain has not announced who will be on their weightlifting team at the Olympics ... they have until 10 June to announce who the members of their team will be. Zoe has been training hard and is hopeful she will be named to the team.
The winners of the gold medal in the Women's Ice Hockey competition in the Sochi 2014 Winter Olympics are the team members of the Canadian women's Olympics ice hockey team.