Families are demanding their money back after disbursing £ 35 for each VIP ticket.
They had been promised the opportunity to spend time with the contestants of this year's series.
And the official Love Island Live website had told fans: "Get ready for the best self-esteem with your favorite Islanders."
But it is said that it was so full, that many fans lined up for hours for nothing.
The spectators affirmed that some visitors were so angry that the fights broke out.
According to reports, those who managed to meet the winners Dani Dyer and Jack Fincham after standing in line for 90 minutes received only 20 seconds with them.
Anna Troth was among the thousands who gathered at the ExCeL center in London.
She took the daughter of a friend, with the intention of giving her a 13th birthday to remember.
"I bought the additional VIP tickets because I said we could meet all the islanders"
Furious Anna said: "I spent about £ 100 to be here today and we do not have a single photo.
"We waited for two hours for nothing, the day was supposed to be special, I'm going to ask for a refund.
"The event was oversold, it was so full. Many people want their money back.
"I bought the additional VIP tickets because I said we could meet all the islanders.
Dani Dyer and Jack Fincham celebrate after a cheesy proposal on Love Island
"We made lines and lines for Dani and Jack and they told us it was too late.
"They passed and Jack was going to let us take a picture, but one of the organizers put us aside because it seemed security."
This year's series was a great source of income for its creators.
ITV said about the ExCel event: "We had overwhelmingly positive comments and we heard that some people were disappointed."