Flying out tomorrow! Haven’t flown in over 5 years- could you give me some advice and encouragement?

I’m flying to Orlando tomorrow, it’s about a three hour flight and it’s the first time I’m flying in 5 years. It’s also my first time flying without my family, only my partner. I’m very nervous, yet excited and having lots of anxiety. Does anyone have any words of encouragement or to ease my mind? Thank you in advance:).