Friend advice help please 10 points?

i think you should just take kendra because like you said stacie went behind your back and decided to go to Las Vegas with some other girl and thats not right because she had already mentioned it to you eventhough she is your bestfriend and thier shouldnt be fights or anything you need to keep your word to kendra and not stacie because she couldnt keep hers just go on your cruise and if she gets mad then just say well i didnt ask you again because when we werent talking i didnt know if you still wanted to go so i went ahead and asked kendra you shouldnt stress out about a situation like this because you need to enjoy a present that your parents got for you. So just go off and have fun and when you come back just settle everything. im sure she will not throw your friendship of 10+ years for something so little.