Thank You For Thank You Letter for a pleasant occasion
Dear {Recipient},
Thank you for inviting me to {event/activity} {last weekend/on Friday/etc.}. It's not something I would normally do, but I'm glad you asked me to come along because I certainly had a lot of fun!
{Elaborate on what made the occasion enjoyable.}
Thanks again for organizing. Please count me in for the next one!
Cheers,
{Your Name}