yes but you will need a licence

Not at this moment.

This is also a park where John Lennon and Paul McCartney used when young, Not that far from Lennon or McCartney's boyhood homes and just a few blocks from Pennylane

Palm house in Sefton park is open every day ,unless it’s booked for a wedding, you will need to go on their Webb site to find out if it’s booked

Yes you can park in specific roads that are on the edge of the park for free however if you park in side roads I would ask that you be respectful to local residences and do not block access.

Think so, legal or not my friends do it all the time

No I’ve never seen peddle boats at Sefton Park

Yes, there's a café near the children's playgrounds and statue of Eros. It is fairly basic, though - you won't get a posh afternoon tea, but you'll be fine for a brew and some cake.

Looked ok when we were there and it had been raining, but I was only there once so not sure how it might be after prolonged rainfall....I hope you get to the festival and enjoy it.

There is on road parking all around the park. There is also parking spaces in several areas around the park. All parking is free.