We went to Smuggs last March and had a great time! For families with young kids the convenience factor, and the other amenities like the pool, funzone etc . . . . can't be beat.
It was definitely not cold when we were there (end of March). Probably 50 degrees in the base village. They told me it was much warmer than average. The only snow was on the mountains, the rest of the place was a sea of mud! So bring mud friendly boots and really old sneakers.
On the mountain, my son wore ski pants with nothing under them (other than boxers), a longsleeved Tshirt, a shell (like a windbreaker) , helmet (you can rent them) and gloves (which came off a lot because his hands got too sweaty). He needed the waterproof outer layer because he still falls a lot, and the snow was soft.
I wore jeans (brought long underwear, didn't end up needing it) a turtle neck shirt, a fleece (which came on and off) gloves (also came on and off) and a hat. I knew I wouldn't be falling much (or at all it turned out) because I'd be sticking with him on the easier slopes.
Oh, and the most important things -- sunglasses or goggles, and ski socks that are padded and go up to your knee, to protect you from getting blisters at the top edge of the boot. You can save on everything else but get good socks!
Given that you're newbies (so you'll be falling at least a couple of times) I'd plan on wearing -- the socks, a helmet (for the kids at least -- for you it's your choice) or hat, gloves or mittens (waterproof), a layer of long underwear (or pyjamas! work just as well and you probably already own them or longsleeved shirt and long underwear bottoms), a lightweight waterproof jacket, ski pants or bib, and a fleece or sweater. That way you can take your middle layer off if you get too hot (fleece and long underwear bottoms) and just ski in the ski suit and a long sleeved shirt.
Have a great time -- you're going to love this!