Ps to keep grandma and grandpa from going crazy babysitting any should suggestions for areas for a kid to run around would be appreciated
Welcome to Epic.
All the mountains have some green terrain (I assume that this is what you are looking for), so they all could work. Would need a bit more info to make an optimum recommendation, but here are a few thoughts.
Breck has some of the easiest green and blue terrain with some decent options to mix up where they are skiing (much of the green terrain is on Peak 9, but 8 has some as well) BUT Breck is likely to be the most crowded (and is the highest elevation if you are coming from sea level). Being able to stay close to the slopes and walkable to town is a nice option.
KS has some green terrain at the top and is family friendly, but if you can't navigate easy blues, then you will be taking School Marm a lot before being able to branch into a few different options.
Vail is twice the size of KS and has a lot more green terrain. The green terrain varies from pretty flat/easy to borderline blue terrain and is spread throughout the mountain, so it helps if you have a guide. take a lesson or know how to read a trail map and can handle steeper green.
Beaver Creek would probably be my first choice- green terrain at the top and down in Bachelor Gulch & Arrowhead. Should be the least crowded of all your choices.
As long as the weather is decent, all the places have some areas for a 1.5 year old to play in the snow. Just look around.
You don't say how long your trip will be, which is relevant in terms of having other things to do besides skiing. You also don't say if you've already arranged a place to stay, which I'd think would be the guiding factor given the crew and circumstances you describe. I'd lean towards Breck or Keystone; definitely not Beaver Creek. However, Breck is fairly high altitude, and some folks coming from sea level do have problems with that. If you haven't yet organized your lodging, another possibility might be Winter Park, which has lots of green terrain.
Beaver Creek would be my first choice. Really nice beginner terrain and the least crowded of anything along the I-70 corridor, Breck can be horrible crowded at Spring Break, especially so in the areas with the easy runs.
great advice on identifying what type of skiers are going on the trip and what your expectations are for crowd management and related amenities. I've taken my family, 7 year old, wife and 2 year old to, to B Creek for a quick 4 days of skiing over the past two years. My wife doesn't ski and loves the laid back break from NYC. My 7 year old has a great time because the terrain is perfect for her. I can also feel confident that if there is ample amounts of terrain that is perfect for me........BC is on the pricey side but that said the terrain, service, and amenities are worth it.
I agree that the OP could give us more info to go on, so BC might not be the best choice, but given the info provided, I don't think this is so obvious.
I'm guessing lack of altitude. Beaver Creek is the lowest resort in the area, and it's really warm right now. Today is supposed to be like 45 degrees in Breck. Boo. A month ago, I was on the phone with our condo association about the massive snow piles in our parking spaces. The last two weekends, I was shocked to see the bare pavement and lots of melt. And that's still over 1k feet higher than the base of Beaver Creek.
Why no mention of Copper so far?