I plan to go to my alma mater's sports day with my junior high school friends tomorrow. I have gone the sports day when I was a first-year high school student. I'm looking forward to meet that friend and I want to enjoy the sports day.

I plan to go to my alma mater's school festival with my junior high school friends tomorrow. I had gone to the school festival when I was a first-year high school student. I'm looking forward to meeting with that friend and I want to enjoy the school festival.