They were promised a larger-than-life, interactive Barbie Dreamhouse, an '80s-themed roller-skating party and a glittery pink day in Barbieland. Instead, fans of the world's most popular doll who trekked to the "Barbie Dream Fest" in Fort Lauderdale, Florida, were met with a cardboard cutout of the idyllic house and a tiny, kids-only roller "rink," a far cry from what was advertised on Instagram. The event took place from Friday to Sunday at the Broward County Convention Center. In promotional posts on Instagram, it touted a Barbie fashion show, A-list speakers, meet-and-greets, workshops, interactive exhibits, games, screenings, yoga and more. Adult ticket prices ranged from a $69 day pass to the $449 “Dream Pass” with other pricing and accessibility options in between. But two attendees who spoke to NBC News said they were sorely disappointed with the lack of pink, glitter and excitement that they said was expected — especially for the prices they paid to get in.…