Honestly, this park may be an issue. Most of the rides are designed for small kids. You should be ok on the Technic Coaster and the Dragon Coaster. They do have a big boat ride through Miniland which should also be ok. The rides in Pirate Shores should also be ok.
Other than that, honestly, the rest of the park may be rough.
That's not to say the park isn't fun, Miniland itself is worth a trip to the park and you can easily spend a few hours just walking around there.
Can anyone tell me about their experiences of going to Legoland and rides they could and could not get on?
Actually, I think there are many attractions that you could ride on. While Sir. Clinksalot is correct in that many of the rides are designed for kids, most were also designed for families to share together, meaning that adults will also fit.
I just got back earlier this month from my first trip there (with my granddaughter) and found lots of rides that I could enjoy. For example, the Splash Battle allows riders of all ages to get wet, as does Pirate Reef. Knight’s Tournament is primarily an adult or older child ride. Lost Kingdom Adventure is like a Buzz Lightyear Astro Blasters ride. There are many others that you can ride as well.