It's important to see beneath the surface (looks, social class, etc.) to really know who people are. The Beast's curse illustrates the importance of generosity of spirit rather than greed and shows the value of humility. Belle's love of books demonstrates the transformative power of reading/education, and her interest in teaching a girl to read shows that girls should be every bit as educated as boys. Also, you can't just stand by when someone treats someone else poorly; you should act. Freedom is essential to true happiness. Themes also include compassion, empathy, and curiosity.
Scary, intense scenes involving snarling, hungry wolves. They attack Maurice after a tree suddenly falls in front of his wagon in a dark, spooky forest, and they go after Belle when she leaves the castle (the Beast fights them and is left wounded and bleeding). The Beast growls/roars several times. Belle takes a snowball to the face. (Spoiler alert!) Flashbacks reveal that the prince's and Belle's mothers both died of sickness; their children are separated from them in both cases (sad/upsetting). Gaston yells at Maurice, threatens him, punches him, and ties him to a tree and leaves him there. Gaston has Maurice and Belle arrested and violently incites mob violence (pitchforks, torches, battering rams, etc.) and uses a gun to shoot the Beast. Villagers and castle servants fight. One character plummets to their death as the castle crumbles.
Flirting, dancing (both opposite-sex and same-sex couples), and a couple of kisses. Some dresses show a little cleavage.
Insults include "idiot," "fool," "crazy," "delusional," "peculiar," "hag," etc. Also "shut up" and a reference to "eternal damnation."
Nothing in the film itself, but Disney has plenty of merchandising tie-ins, from apparel and accessories to toys.