Writeacher, I urgently need you to check these sentences. Thank you very much.

1)After that we are going (we'll go?which form would you use to describe your summer holiday?) on a guided tour of the science museum.
2) We'll spend some time in the city centre doing shopping. Then we'll go on a boat tour on the lake. After that we'll pack our luggage (not baggage) and we'll leave for Milan at 2 pm.
3) We made a vase from clay. During the bus journey we chatted with one another and listened to music. We went on a guided tour of the museum. We are leaving from Turing to Florence (or : Turin for Florence..) on…
4) We are meeting at the square just in front of the graveyard. We are scheduled to arrive in Florence at…/for…. (are both possible?)
5) First, we’ll check into (are checking into is wrong?) a hotel called Victoria.

1. After that, we're going ...

3. ... leaving Turin for Florence.
OR
... leaving for Florence from Turin.

4. ... arrive in Florence ...

5. ... we'll check into ...

1) After that, we are going on a guided tour of the science museum. (Use the present continuous tense "are going" to describe future plans in a more informal way)

2) We'll spend some time in the city centre doing shopping. Then, we'll go on a boat tour on the lake. After that, we'll pack our luggage (not baggage) and leave for Milan at 2 pm.

3) We made a vase from clay. During the bus journey, we chatted with one another and listened to music. Then, we went on a guided tour of the museum. We are leaving from Turing to Florence (or you can also say "We are leaving Turin for Florence...")

4) We are meeting at the square just in front of the graveyard. We are scheduled to arrive in Florence at... (Both "arrive in Florence at" and "arrive in Florence for" are possible, depending on the context and what you want to emphasize)

5) First, we'll check into a hotel called Victoria. (Using the present continuous tense "are checking into" is grammatically correct, but using "we'll check into" sounds more natural in this context)