Explanation:
Obviously, the words in the ( ) are grammatically incorrect.
1) “We’ve been/ we have been.”
2) “...We got to Blareney Castle...”
3) “... I got to kiss the Blarney Stone!”
4) “... I had a picnic in the countryside...”
5) “It had rained 4 times since....”
6) “Since I arrived/ since I had arrived...”
7) “PS, I saw a rainbow yesterday, but I...”
8) “... have not caught a leprechaun yet!”