I know the con's not even over yet, but I have to complain about those damn portable bluetooth speakers people are carrying around with them. I'm quite sick of them, they're so loud, you can't hear yourself think or have a conversation within about 10 meters of someone with them. There's so many of them, at one point yesterday I was surrounded by 4 of them and it gave me a headache. And to top it off, at 2:15 this morning, there was a group of people outside my room waiting for the lift playing one, and it woke me up, and when I opened the door telling them I was sleeping and asking them to turn it down, made them turn it up!
I wouldn't mind these things if people were respectful of others, but they aren't, then seem to want to think we all want to hear their music and play it really loud. And waking me up with one early in the morning was just the final straw.