Chloe Johnson, from Forest Hill in south east London, died in a waterpark at the Coral Sea Waterworld Hotel in the Red Sea resort of Sharm el-Sheikh on Friday.
Her family say they are angry and hurt that more was not done to save her.
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The 34-year-old from Coulsdon in Surrey died during the private party in Headley in the early hours of Monday, Surrey Police said.
The Home Office made the arrests at various restaurants across London on July 4.
Mayor of Newham Sir Robin Wales criticised the International Olympic Committee on the fourth anniversary of the opening ceremony.