How to beat homesickness?

My friend is going to Tennessee over Spring Break (the end of April, for us) and she and her whole family want me to come. I love her family to death and I feel so comfortable around them; it'll be at a waterpark (she has younger siblings). The only problem is that I get SUPER DUPER homesick and we live in Michigan. I already feel very loved around them; when I was struggling with depression and suicidal thoughts, her mom was there for me 100%. So, does anyone have any tips?