By all means! You may show this game in whatever context you wish.
Thank you and good luck with your event!
Google Translate below:
ぜひ！このゲームをどんな状況でもお見せください。 ありがとうございました。イベントの成功をお祈りします！
Good morning.
My name is Hayato Nakada, and I am the producer of the indie game event "DREAMSCAPE".
The event has successfully concluded, and I would like to thank you for providing your work for it!
The day was a huge success and very well attended. We are deeply honored to have been able to display your work at this event.
I would like to send you some photos. Could you please provide me with your official contact information? I would like to send the photos to that address.