You have to hand it to the Americans: they think big. Where the Royal Ballet or ENB might put on three or four new works in the course of a season – because commissions are wildly expensive and a box office risk – San Francisco Ballet has just presented a dozen in the space of two weeks. What’s more, the 12 invited choreographers – four of them Brits or British trained – were given virtually carte blanche to create whatever they liked.

The Royal Ballet last night presented an evening of Bernstein-scored ballets, two of them premieres by Wayne McGregor and Christopher Wheeldon and the other a revival of Liam Scarlett's 2014 Age of Anxiety.

I can imagine Monica Mason, the artistic director who commissioned Christopher Wheeldon's 2011 Alice, feeling pretty pleased with herself as she looked around the Covent Garden auditorium last night at an audience buzzing with excitement for the first performance of the new season.

Liam Scarlett must be worked off his feet. Just at the Royal Ballet, he made a full-length work, Frankenstein, last year and is currently working on a new Swan Lake; and now last night he has premiered a new abstract work, Symphonic Dances at the Royal Opera House.

What’s in a yellow dress? Hope over experience? Reckless confidence? This is a legitimate question when the second big cross-Atlantic people-pleaser hoves into view featuring a girl in a frock of striking daffodil hue. It doesn’t take a degree in semiotics to translate this. Forget the bad stuff, people. C’mon, get happy.

Can thirty minutes of contemporary ballet say something meaningful about the modern refugee crisis? It has been the surprise of the season to find myself asking this question not once, but twice, at the Royal Ballet.

It shows you just how much Kenneth MacMillan changed ballet in this country that 1960's The Invitation, with its onstage rape, sexual grooming and child abuse, can act as the reassuring classic at the heart of the new Royal Ballet triple bill which opened on Saturday.

It was twelfth night for Christopher Wheeldon's two-year-old, three-act Shakespearean ballet, and this newcomer had one nervous anticipatory question. The verbal music is gone, only the plot remains, so could A Winter's Tale the play inspire Wheeldon to imaginative heights in the way that Romeo and Juliet brought out the best in MacMillan, via Prokofiev?

Christopher Wheeldon's new ballet Strapless scores a first on a number of counts. It’s the first co-production between the Royal Ballet and the Bolshoi (London gets first dibs – Moscow doesn’t get the goods for another 12 months). It forms part of the first ever triple bill the Royal Ballet has devoted to its most famous son. It’s the first ballet music Mark-Anthony Turnage has written to order. And it’s the first ballet on the Covent Garden main stage to feature a passionate gay male kiss.

Christopher Wheeldon is the purveyor of pretty. You can perfectly well see why San Francisco Ballet, who commissioned a new full-length work from Wheeldon in 2012, got cold feet at the prospect of tackling the difficult, Britten-scored Prince of the Pagodas, and steered Wheeldon instead towards Cinderella, with its ready-made audience of little girls in blue sparkly dresses and splendid Prokofiev score.