Yep, when I went to my own military training. I had until 6pm that day to report in.
I didn't want to wait too long and angst about it, so I reported in at 2 pm. More time to set up my gear to the ridiculously small closet, to que for lieutenants interview etc. And of course, get to know my 11 roommates a bit better.
Waiting is the worst part of it all. And boy does military have a lot of hurrying up somewhere, then waiting, when again hurrying somewhere else... It's like constant, drawn-out interval training: rest, max performance, rest, max performance....