Weather in April should be great! Unless of course, it rains. If the temperature goes down though, it might snow. But then again, the sun might shine, unless fog rolls in. Dunno. Depends on the weather, eh?
You get the idea. I don't know about other parts of the world, but in the PNW unless a high pressure system comes and parks itself, the weather from one day to the next could be anything, regardless of the forecast. Especially this year, which has defied any sense of reason.
If you get here and the village is dampish, go up. Waaaay up. After spring break, especially mid-week, there will be few lift lines. I've had the best powder days of my life on the Peak in May, though there were rivers running down the village streets.
Noise in the village really shouldn't be a factor. If you're concerned, stay in the upper village. If you have kids, I recommend Club Intrawest. You can borrow board games, kids videos, and there is an arcade downstairs where the games are free. Also, there is a "family environment" pool area, complete with a 30m water slide, in addition to another seperate pool area for adults only. It would be a terrific family vacation, even without the skiing.
Let's hope it cools off and snows, for all to enjoy!