Seems just a tad trivial to me to simply want to re-experience a sensationalist schlock movie premiere. The only direction I would ever take a truly functional time machine would be going forward - the past is the past, but the future holds everything, from next week's lottery numbers

to humanity's fate at large - climate change, pandemics, earthquakes, demagogues/mass manipulators, and our species reactions thereto, including potential geo/bioengineering and/or spreading our seeds/seedlings throughout our solar system and who knows how much further out. I think the biggest regret I will have on the day that I die (other than perhaps not getting enough high strength painkiller, if I'm even sufficiently conscious to reflect on that fact at that time) will be missing out on what will happen on the day thereafter, and the next day, and so on...