Shall I give in to this to keep peace?

My older sister had been trying to call me and I wasn’t able to return the call yet. I will tomorrow. However she then texted and said she and my younger sister were planning a family vacation cruise, to a destination I am not crazy about. She has a friend who is a travel agent and she needs to know by Saturday. Otherwise she won’t be able to get this great deal the agent told her about.
I’ve been to the Caribbean many times, mostly to Puerto Rico where I have family. The destination she wants to go to is the Bahamas. I am not a fan of beaches and roasting under the sun. That’s just me.
If I refuse, I think it’ll make me look somewhat bad. However, inside I think, it sounds like the agent is using this short time as bait. And two, why didn’t we all decide on a place to cruise to or go to, if it’s a family thing? It shouldn’t be up to one person where we all should go, right?
What do you think?

Shall I give in to this to keep peace?
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