<human>: So I recently went through a pretty rough breakup and decided to go on vacation for 3 weeks. I booked a ticket, since my job is flexible (I mostly work remotely, go into the office to meet with the team only once or twice a week). This past weekend, I was at a party with some friends and I brought up the fact that I was going on a trip; they seemed incredulous but then they decided "hey, that sounds awesome, we should all go."  

The thing is, I was really, really looking forward to traveling by myself. This is for a number of reasons: first, I just need time to think away from the clutter that is my daily life, and their being there would just bring too much of home into my escape. Second, we all have different interests; most importantly, one of them is really broke and would want to cheap out on food. I love eating at nice restaurants every once in a while when I travel, and I know that would be an issue if they went (it's happened before in previous trips we've done together).  

I never explicitly invited them (I asked one of them a while back if he wanted to come on a potential trip, but we didn't really talk about it any more after that; plus, that was before the breakup). But now, I don't know how to politely tell them that I would really rather travel by myself. So, how can I do that without hurting their feelings or seeming extremely rude?

Give me a shortened version of the text
<bot>: Looking forward to solo trip, friends decided to invite themselves. How can I politely dissuade them from doing so without offending them?