Tomorrow, wWe're going to get up very early tomorrow because we will go tobe spending the day in Girona.

We will / We're going to take a high speed train, so the traveljourney will be short, - about thirty nine minutes.

Usually, I don'tI don't usually take trains, but I feel that this is the bestter way to arrive gGirona city, besidesing both fast and comfortable.

Tomorrow there be will an urban sketcher meeting in thate city, so we will spend drawing all mornthe morning drawing.

There will be an urban sketcher meeting in the city tomorrow, so we will be spending the morning drawing.

After lunch at the afternoon, we would like to visit this beautiful city.

We would like to do some sightseeing after lunch.

(Afternoon is understood as lunch is 12pm-2pm usually.)

It will be lots of funny.

Jokes are funny. Day trips are fun!

Tomorrow, we're going to get up very early because we will go to're spending the day in Girona.

We will take a high speed train, so the travel time will be short, only taking about thirty nine minutes.

UI usually, I don't take trains, but this is the bestter way to arrive gtravel to Girona city, besidecause it's fast and comfortable.

I'm not sure if I accurately corrected what you are trying to say.

Tomorrow there be willhere's going to be an urban sketcher meeting in that citythere, so we will spend drawing all morning drawing.

You don't need to include 'tomorrow' or 'in that city' because it's implied that you're talking about your trip to Girona.

After lunch atIn the afternoon after lunch, we would like to visitexplore this beautiful city.

I find this sentence a little confusing because it sounds like you're hypothetically talking about visiting the city, not the trip you are planning to actually take. Do you mean that you want to look around the city? If so, 'In the afternoon after lunch, we would like to explore this beautiful city.'

It will be funny.

'Funny' is used for something that makes you laugh (like a joke). I think 'fun' is the word you are looking for.

Tomorrow, we're going to get up very early because we will go to spend the day in Girona.

We will take a high speed train, so the travel will be short, about thirty nineforty minutes.

Thirty-nine is a very specific number. You can round up and say, "about forty minutes."

Usually, I don't take trains, but this is the bestter way to arrive gin Girona cCity, b. Besides fast and, it is comfortable too.

"Besides" introduces another reason for doing something on top of reasons you've already given.

Tomorrow there be will an urban sketcher meeting in that city, so we will spend drawing all morning drawing.

After lunch at the afternoon, we would like to visitexplore this beautiful city.

At this point in your plan, you are in the city already. So "visit" wouldn't make sense here.

It will be funny.

The grammar is correct, but did you mean "fun"? "Fun" would make more sense here.