klaberte

You may want to look at a MURS radio...  https://www.buytwowayradios.com/catalogsearch/result/index/?q=Wouxun&tw_service=1499  I would call them (888) 569-9499 and ask... I have several Wouxun GMRS and heard that MURS is better point to point.  Now for skiing and hiking I like what this radio does.   I liked the T800 Talkabout  from Motorola BUT GMRS is not a good as MURS point to point or radio to radio...  Do call and ask around about GMRS and MURS..  I do not think Motorola has a GMRS or MURS rich radio but the below video what it does to link with iPhone for connecting...  Have a good safe trip and enjoy the kids.
 

Klaberte,
Do you already have some GRMS radios? Or are you looking to get something just for this trip? I have not used my GMRS handhelds skiing but have used them on foot and in vehicles in the mountains. If you already have them give it a try. I have been on the side of a mountain and talked to others up to a mile away without being in line of site. We were using 5w radios. I can talk to my daughter's family using the same handhelds house to house. I am at 3300 feet and they are 3.7 miles away at 2600 feet with a ridge between us blocking line of sight by about 80 feet.  Sounds like a fun trip, enjoy!
Sean