This won't matter to many, perhaps most of you, but the movie starts off showing a teen couple dancing in what is clearly a malt shop from the late 1950s. Every feature period correct for a 50s malt shop is there down to the old-fashioned jukebox and the soda jerk (this is not a criticism--that's what they were called). After dancing and showing that they were clearly in love, we cut to the guy in uniform, obviously going off to war, the girl sad and upset. But guess what, he's wearing a uniform not adopted by the military until some years AFTER the Vietnam War ended. So there is what appears to be a thirty year oops. Cut to present day, and the guy, now a grandfather, is telling his granddaughter that this all actually took place in the 1970s. Well, as someone who went to high school in the early 1970s, we just didn't hang out in 1950s malt shops--because there weren't any! And as someone who went into the military afterward, I can tell you that if "grandpa" was supposed to be going to Vietnam, he was wearing a uniform not yet adopted. To add to the already ridiculous situation, he was wearing his pants over his boots--the Army and Marines bloused their pants. The Air Force did not, but they didn't adopt this uniform until the mid-1980s! Bottom line, it's really hard for some of us to get into a story when Hallmark makes NO attempt to get history remotely correct, making so many errors in the first five minutes!
Your enjoyment may vary, of course, depending on your willingness to suspend disbelief.