I hope you had a great birthday. 希望你度过了一个美妙的生日！
在给对方送上迟到的生日祝福时，也可以说Happy belated birthday. 注意句子要用过去时。
I'm sorry I couldn't come to your party. I hope you had a great birthday.
很抱歉，我没能去参加你的生日聚会。希望你度过了一个美妙 的生日！

I had a good time during my visit.拜访期间，我过得很愉快。

have a good time是"度过美好时光，过得很愉快"的意思。在出差或者 旅行归来之后，不要忘记向招待过自己的人表示感谢。在西方，通常会 给对方准备鲜花之类的礼物。
I had a marvelous time during my visit. Your hospitality was gracious and I felt very comfortable.
拜访期间，我过得很愉快。您的热心招待让我感到亲切与温暖。