How many of the activities in the pictures are mentioned?

Let's count the activities mentioned in the email that are also in the pictures.

The activities in the pictures are: having a party, playing basketball, going skiing, and flying to Rome.

Let's read the text and identify the ones that are mentioned in the email:

• Having a party - not mentioned
• Playing basketball - not mentioned
• Going skiing - not mentioned
• Flying to Rome - not mentioned

So, none of the activities shown in the pictures are specifically mentioned in the email. The activities that are mentioned are going to have lunch together at a restaurant, visit the art gallery, enjoy a performance at the local theatre, go shopping, and have a picnic.

Answer: 0