>>9889618yes. most holes are predrilled, but you'll likely still have to smooth them out, enlarge them, drill them deeper, whatever to properly fit joints in them.
this
>>9888408should give you a decent idea of the work you'll have to do. You have to remove a bunch of sprue marks and paint if you don't want the raw resin colors. It's a lot of work.
picrel was the furthest I've gone on a garage kit, which took a few hours to get to that point, and it's still far from done. I have 4 or 5 other ones I just never started.