We read up from guide books before our visit , I wouldn't suggest a guide, we were given a paper map on arrival and they have staff who can tell you where things are. Personally I think its nice to stroll at your own pace and spend as long as you feel necessary. The views are spectacular.

Hi I don’t think 30 minutes would give you enough time to walk around and appreciate it At least hour to 90 minutes I d say

The signs said they will let you in starting 30 minutes before your time slot!

Hi .. there was no indication of a one way walk inside if that’s what you mean .. people were going anyway. But I’d imagine when it’s busy there is a managed people traffic flow but no idea how it would work as it’s a bit of a maze and the walk ways are quite wide, so don’t see need for it. To be honest I wouldn’t bother going there, it’s really nothing but an ordinary park with a city view at the top. If you decide to go, when you leave just walk down the street a bit to a bus stop and bus 24 takes you into the city and drops you at end of LaRambla.

Not sure why you are asking me because I’m not a travel agent.

The HOHO bus route is 2 hours, so use that as a guide to help determine how long it will take you to get to the Park. Allow a little extra for the 10-20 minute wait for the bus, and possible delays along the way. But it looks like you are roughly half way around the route, and if you are leaving at 9 with entry at 11 you should be fine. If you are early you might check at the ticket counter re: early entry.

eravamo lì all'inizio di febbraio e all'epoca non c'erano lavori di ristrutturazione.

We didn't go in at the exact right time and they didn't seem to notice or if they did it was ok that the timing wasn't perfect. Hope that helps. Enjoy.

It’s around 10 euros per person for the section with all the Gaudi structures, and you can stay as long as you want. There’s quite a lot to explore! Just note, you can’t exit and re-enter without paying again, so plan accordingly. It gets pretty busy. If you bring your own water bottle, there’s a place to refill it near the terrace.

Do the taxi as it's far from other attractions and walking uphill is only for the young. You can choose other modes on way back as it's gonna be downhill