I have a friend who wants to release balloons for her daughter when she is in Disney in October. She was told if she releases more than 10, they have to be biodegradible(sp?). Is there anywhere to get that type of balloons and if so, what do you do about strings? She also thought if this was too difficult to do, she could do a buttterfly release but doesn't know where to begin. Anyone out there done anything like this? We'd appreciate your input!!! TIA...