And the answer is.... Līgo

BL and DP, you win!! (See this blog post.)

The game (Where in the World is... Amanda Lightfield??) was slightly misleading because the answer to my clues was the country of Latvia, and I didn't technically go to Latvia. *Gotcha!* But I did go to New Hampshire where I went to my very first Latvian Summer Solstice celebration! I sang Latvian songs, drank homemade Latvian beer, ate Latvian cheeses, and participated in the Latvian holiday called Līgo! Never heard of it? Here is a summary:

"Līgo! and Jāņi are a somewhat mystic event, as, according to ancient traditions, you have to search for the Legendary fern blossom, wash your face in the grass`s morning dew, and gather herbal plants, which are said to have a special power midsummer. Summer Solstice or Jāņi celebrations date back centuries, when Europeans actively practiced the cult of the Sun. Bonfires and other rituals were not only part of annual traditional celebrations, but also manifested the unity of cosmic and earth order.

Jāņi is the celebration of the longest day and shortest night of the year. People are invited to cheerfully celebrate Līgo! in all Latvia`s regions and towns, by warming themselves around bonfires, playing games, and observing traditional rituals and other activities until the sunrise. This night becomes memorable when celebrated together with the best Latvian folk groups and musicians any place in Latvia."
(Source)