Awww. Sweet story.
My family went to Disneyland when I was 14 and my sister was 16. We didn't meet any Clark's - no summertime romances for us. But we did have fun.
I will admit I was a bit concerned (well, maybe 'concerned' is too strong a word, but I was struck) by the fact that Lois was only 16. However, after reading, yes, I think you are achieving your goal of sweet, innocent (PG) romance. (As long as the title isn't meant to be a double-entendre!

)
Looking forward to reading more...