No it's good sportsmanship to WAIT until your team is announced to start celebrating.......that's what we teach our kids in my gym. Every team deserves their OWN time to celebrate, whether it's 10th place, 3rd, or 1st. Every team deserves the chance to celebrate as if they won 1st place. So as hard as it is for them to contain themselves, they try to hold it in until the 2nd place team is done jumping and hugging and crying, etc. Once their name is called for 1st, then they can celebrate and do standing fulls on the awards mat for all I care, lol. It's about respect. I don't expect them to sit there like complete drones, but they do not burst out in true celebration until they are called. To me, that's just common courtesy.