1234, Main Street
Boston, MA 02123
01 April, 2005
<Recipient Address Goes Here>
It was [Time of the tour] when I/we took an adventure tour through your company [Agency name]. I/We <was/were> really enjoyed our tour. The whole tour was such a great experience that cannot be described in words.
We enjoyed each moment of our tour.
With such a memorable experience, I thought to write in to compliment your services.
We were comfortable for the entire tour and the cost was worth the fun and enjoyment. It was really a fabulous experience.
Thanks for the good times.
encl: <List of enclosed items goes here>av