Conversation so far:
how did Vaslav Nijinsky's career start?
Nijinsky spent his summer after graduation rehearsing and then performing at Krasnoe Selo in a makeshift theatre with an audience mainly of army officers.
what did he do after that?
These performances frequently included members of the Imperial family and other nobility, whose support and interest were essential to a career.
why were they essential?
Each dancer who performed before the Tsar received a gold watch inscribed with the Imperial Eagle.
Buoyed by Nijinsky's salary.
how much was his salary?
The new season at the Mariinsky theatre began in September 1907, with Nijinsky employed as coryphee on a salary of 780 roubles per year.
did she dance with anybody famous?
He appeared with Sedova, Lydia Kyasht and Karsavina.
Kchessinska partnered him in La Fille Mal Gardee.
did he ever get married?
CANNOTANSWER.
what else happened?
Designer Alexandre Benois proposed a ballet based upon Le Pavillon d'Armide, choreographed by Fokine to music by Nikolai Tcherepnin.
did he spend a lot of time with the royal family?
These performances frequently included members of the Imperial family and other nobility.

Question: how the imperial family help his career?
Self-contained rewrite: how the imperial family help Vaslav Nijinsky's career?