Its a mixed crowd of fun people. A good amount of couples go, however do not let that make you think there are not singles there. Once you are there everyone is having fun and its just a great time.
Don't even worry about it. My upcoming trip is the 7th girls trip (usually singles) and we have an awesome time. CCC does not represent to whole population of TTR.
I met my husband 12 years ago and we are very happily married now. Before him, I thought I was destined to a life of loneliness. If I had had to live my life without someone as awesome as my husband, well Temptation would be my no.1 resort for meeting nice guys! Go and have fun and let life take its course.
Last trip we made, we took another couple and two single ladies. BOTH single ladies hooked up with some very nice, intelligent and respectful males. If you are nice and looking to have a good time, you'll have no problem at TTR. It's the perfect setting - not club-mania, but definitely not just a singles resort. There's about 60% couples and 40% singles as far as I could tell.
You'll be fine. The great majority of the people who go to TTR - go there and return again for one reason. To meet people of all ages, shapes, sizes and status (single, etc.). As the saying goes, no one knows you and know one gives a shit. Be open minded and you'll have a great time...
First 8 (or 9) trips were with my husband. In a couple weeks I'll be going back with a gal pal and I know I'll have just as much fun as always. There will be singles there, but speaking as someone who was a "couple" at TTR the groups mix and adopt each other. One of the best trips and the most fun was when we hung out with cousins Sandy and Tanya from BC. They both were friendly and interactive with both my husband and I and this is just not a place where people go who are possessive or jealous.
Hope you just have as much fun as a solo. Just go as to show you can have just as much fun as a single as a couple! If I end up single I can think of only one place I want to go.