Can't speak for all establishments but I've looked into late February on my rota and I've not noticed any nights in it at all yet. Again, like the irregular day shift pattern I'm not fussed on nights at all, either I'll get them in my first 6 months or I won't. But some doing their POELT with me from other establishments seem to be getting their night shifts very early on, maybe they will get them more often than us I'm thinking?.
Best thing for me is my days off are all over the place, looking forwards to having different days off than the same days every week. But guess that sort of rota won't suit or appeal to everyone.