Sure! Very simple!
1 c. Watermelon Vodka
1/2 c. Triple Sec
1/2 c. Coconut Rum
Pink Lemonade mix (2 qt. portion)
Sliced strawberries
Dump liquors into a 2 qt. pitcher (or carafe, container, etc). Mix in the pink lemonade mix until dissolved. Dump in strawberries (I use about 1 c.). Fill to top with water. Refrigerate. Enjoy!
I know the logistics might feel a bit weird trying to pack supplies and all so I'll explain how I accomplished this on a cruise ship.

I pre-measured my liquors into the collapsible rum runner flasks. I used Crystal Light 2 qt. pink lemonade packets so those were easy to slide in with the liquor flasks. I did ship a box of other cruise stuff to the ship ahead of time because I traveled with 2 small carryon size suitcases. In my ship-bound box I had my 2 Rubbermaid carafes, my Tervis tumbler, etc. BUT, I think the carafes would be great to slide those flasks in to pack then wrap in a heavy mil plastic bag for travel. In the place of the carafes (because some people might not be so okay with leaving them behind) you could also use 2 qt. size orange juice jugs from home. I was in a 00T room so I simply asked our concierge to put in a request for a dish of sliced strawberries to be delivered at a specific time & day. I had intended to either find strawberries somewhere onboard, ask my servers at dinner about them, or call room service. I was prepared and okay with the thought of perhaps paying extra for them if need be but that detail worked out. I mixed my 2 carafes the afternoon before
Castaway Cay. Right before we headed out on the island I wrapped each carafe in a towel and slid it into my beach bag. We had a cabana so I was able to shuffle a few things & load both carafes into that refrigerator for the day. I shared with my travel party. Made for a nice beverage to sip the afternoon away. When you get to the bottom, those strawberries are the best part.