London/Paris Ballet Trip Itinerary help pls

Sounds like a nice trip. For me, with only seven days I wouldn't try to get out of London for the UK portion. If you're interested in more wild green spaces while you're here, I would visit Hampstead Heath. You could spend one of your days up in that area and go for lunch in Hampstead. If you're interested more in manicured gardens, then I would recommend Kew Gardens. Of course you could definitely do both (just not in the same day)! April is a good time for both. Good luck with your planning.

Another vote for Hampstead Heath. Wonderful trails in a large green area, the exemplary Kenwood House Museum, and I can recommend The Spaniards Inn for a nice lunch in that area.

Would you be interested in adding performances at Sadler’s Wells? Somewhat more eclectic than the Royal Ballet. Along with the central London theatre there is also a new space at Sadler’s Wells East in Stratford.

if main focus wasn't ballet in the city
How fun to find a fellow traveler who plans trips around ballet dates!

Have you already looked at the schedule and identified your April performance in London?

Perhaps you're planning to see one of these?
https://www.rbo.org.uk/tickets-and-events/mayerling-kenneth-macmillan-details#story
https://www.rbo.org.uk/tickets-and-events/wayne-mcgregor-alchemies-details

i thought it also might be this delightful ballet, though I don't see it scheduled in April:
https://www.rbo.org.uk/tickets-and-events/la-fille-mal-gardee-frederick-ashton-details

Mayerling (RB) on Monday or Wednesday and Romeo and Juliet (POB) on Thursday. Nervous about getting tickets though... Since I am obviously not a subscriber...

Hampstead Heath sounds perfect... Will definitely consider for our trip!

Can't you get tickets on-line as soon as single ticket sales open?

Yes, I plan to look as soon as general ticket sales open. Just over-thinking, I guess!

My effort to get a ballet performance ticket for this October in Paris fell apart when I forgot to write the date down and it was sold out:) I tried the ‘notify me’ option but I think I missed that opportunity too. Last year I did get tickets and I got up very early here on the west coast. I was trying about 3 hours after they went live so the choices were very limited. Just as an FYI. When we went last year there was a longish lineup for same day tickets on returned ones but I can’t say how many were available.

Good luck!

With the Royal Ballet, there seems to be 7 groups that can buy before general booking opens, so I'm worried there just won't be any decent seats left.

I am not a subscriber. I bought a ticket this past spring for a Friday night performance in June, 2025.

I made note of the date the tickets would go on sale, and got up in the middle of the night to buy my ticket.

Prior to the sale date, I reviewed the seat map and chose 6 or 8 seats and sections that I liked.

I was able to get my first choice of seats. And there were lots and lots of seats available. Clearly, there are far more seats than subscribers.

Of course, availability will vary for every performance. If you familiarize yourself with the seat map and get up as soon as tickets go on sale, you should have a pretty good selection.

there just won't be any decent seats left

This will obviously depend on what decent means for you. The Royal Opera House is a huge auditorium.

I found lots of availability of seats in center orchestra. I wasn't looking at balcony, but I recall the front row balcony may have sold to subscribers.

So it depends what you're after.

Thank you to everyone who had responded to my post and offered suggestions or advice. Hugely helpful!

Definitely placing on getting up in the middle of the night to buy tickets. If I'm flying "across the pond" as it were, I want no obstruction, not too far back. Good to know that there are still good seats available after the subscribers have a go. I will do my homework ahead of time and have an idea of where we would like to be.