The tender process ended this week and FRU CEO, John O'Connor says the Union complied with the bid requirements and submitted their bid to World Rugby prior to the deadline.
O'Connor said the FRU together with the Fiji Rugby Bid team, led by Brian Thorburn and Greg Peters, were confident they had submitted a credible and strong bid which ticked all the criteria boxes in all the categories as set out by World Rugby.
The FRU will make public the details of its submission at the Fiji Rugby Awards Dinner on March 9.
A decision on the bid is expected to be delivered by World Rugby by June.
Earlier this year Olympic gold medal winning coach, Ben Ryan, raised serious reservations about talk of a sevens bid, doubting its viability but also saying there were bigger priorities for Fiji rugby to address.