Originally Posted by PAL62V

MU's website is absolutely useless. It apparently only works if you book directly with the airline, on that website. I tried doing it but gave me the wheel of death at payment, so I ended up booking thru Gotogate (with a small discount). You'll be unlikely to be able to do an online check in too, for the same reason. But I had no issues at the checkin desk, and the seats I had pre-booked were still assigned to me. That's also where I got them to attach my VS number, which stuck thru all the flights. Points were awarded about a week later.

The LHR lounge for MU in T4 is the Plaza Premium - it's OK, just not worth turning up too early for.

Hope the flight is enjoyable!