“We’re having a great vacation. Wish you were here! Love, Emily”
This is something you might write on a postcard. There isn’t much room, and you can’t write anything too personal because there is no envelope and anyone could read it. It’s common to send postcards to family or friends back home when on vacation. It would be fun to share the vacation with them if they could have come too.
「バカンスをとても楽しんでいます。あなたもいれば完璧なのに!愛をこめて、エミリーより」
絵はがきに書くような文章です。書くスペースが少なく、封筒に入れないので誰にでも読まれる可能性がありますね。旅行に行くとよく家族や友達に絵はがきを送ります。一緒に来られたら楽しいのにね。