I am longing to see you soon..期待尽快见到您

I am sure that you will enjoy yourself here.我确信您在这儿会度过美好时光。

I hope you are not too busy to come.我期待您会在百忙中光临。

We sincerely hope you can attend.我们期待您的光临。

Please confirm your participation at your earliest convenience.是否参加，请尽早告知。