Yo,
so I moved to Queenstown and actually skiied these resorts with my ikon pass at first. You’re going to want to go September or August. Preferably September. September is the nice spring weather. NZ can get overcast and icey so spring weather is a nice change. But honestly, plenty of warm days in winter too. Earlier in the season is way too much of a gamble.
Mt Hutt has the best snow, from what I’ve heard, but I never made it up there.
Remarkables is fun because they’ve got a nice park and a lot of really fun slack country. But watch out because those relatively young mountains mean it’s craggy and there are a lot of snow sharks. Also, it’s pretty cool how you’re literally skiing on other side of the famous range. Coronet peak (btw it’s COR-O-NET - don’t say “coro-nay”) gets so wind blown and icey. It’s awful. But there are still really fun days there when it gets warm or at the night ski with DJs. Plus the view is awesome and it’s the easiest to get to from town. Coronet’s park sucks.
If you can manage it, you should book a day at cardrona too, I love Cardi’s. Amazing park, great snow (something about the valley just meant that the snow was better than Remarks and Coronet), and just bigger terrain overall.
All of these resorts have places in town where you can book tickets, buses etc. so that is relatively easy. The bus is super easy in Queenstown too so that won’t be an issue. Just make sure to get a bus card at the airport (pretty sure they still sell them there) otherwise it’s a $10 ride into town (a shuttle is $15 per person).
Another thing to note is that I’m pretty sure the borders are still closed so def want to watch that one (unless you’re an Aussie - in that case, go for it)