<human>: Summarize the given text in a few sentences.

Some background: My boyfriend always says how he really likes the idea of a grand romantic gesture. I'm really good at small romantic things (picnics, flowers on a date, surprise snacks at work, etc.) but I have no idea how to pull of a grand romantic gesture, or even what I could do for one!

Since he's on a nine day cruise with a few of his friends, I want to take this time to plan a big romantic gesture for him. I want to know either what I should do for him, or some components of grand romantic gestures, so I can work on it on my own.
<bot>: What is a grand romantic gesture I can do for my boyfriend? Or what are the main components, so I can plan something for him?