irbsevens.com and James Mortimer 30.Mar.2013Getty Images
Hong Kong runners-up Wales and Series leaders New Zealand are two of the eight teams unchanged from last week's action.
Defending Tokyo Sevens champions Australia make the most changes, having lost Sean McMahon, Ben Adams and Shannon Walker to injury.
South Africa call up Cecil Afrika in the place of the injured Paul Delport, while Hong Kong champions Fiji leave out the suspended Ilai Tinai.
Canada and Spain also replace key players. Canada make do without World Cup wing Conor Trainor and the Spanish will miss the try-scoring presence of Pedro Martin. France captain Vincent Deniau had been ruled out, but he has recovered in time for the weekend's tournament.
Squad 'ins and outs' : Hong Kong to Tokyo
In: Peter Schuster, Sam Figg, Paul Asquith
Out: Sean McMahon, Ben Adams, Shannon Walker
In: Thyssen de Goede
Out: Conor Trainor
In: Josefa Lilidamu
Out: Ilai Tinai
In: Jamie Henry
Out: Sione Faamao Teaupa
In: John Houston
Out: Struan Dewar
In: Cecil Afrika
Out: Paul Delport
In: Manuel Sainz-Trapaga, Ruben Sanz
Out: Carlos Blanco, Pedro Martin