Slush Sisters Book

Lake houses & lake days

Margarita machine rental for Lake Travis.

Lake Travis parties are a different animal from a suburban backyard, and it is the area where we get asked for margaritas rather than slushies more often than anywhere else. Lake house parties run longer, the guest list is looser, and people drift in and out over an afternoon rather than arriving all at once — which is exactly the situation a self-serve frozen drink machine is good at.

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An illustration of Lake Travis — a boat on the open lake below the hills
LAKE TRAVIS · TWO FLAVORS · CANDY GARNISH ON EVERY CUP · NEXT-MORNING PICKUP · $250 ALL IN · LAKE TRAVIS · TWO FLAVORS · CANDY GARNISH ON EVERY CUP · NEXT-MORNING PICKUP · $250 ALL IN ·

Lake house parties, and the things worth knowing

Two practical things come up on nearly every lake booking. First, power: a lot of lake houses have their entertaining space on a lower deck or by the water, away from the outlets. The machine needs a standard outlet it can stay plugged into for the whole party, so it is worth checking what is reachable before we arrive rather than discovering it during setup.

Second, sun. Decks over the water get full afternoon sun with nowhere to hide, and a machine in direct heat produces a softer drink. If there is a shaded corner or a spot under an overhang, that is where it should go.

Because Lake Travis covers a wide area, some addresses are inside our free 15-mile radius and some are not. Spicewood and Briarcliff sit toward the outer edge. Send us the address with your booking and we will tell you the exact number before you commit — there is a $1/mile charge past 15 miles and we would rather you knew up front.

This is also the area where we get the most adult bookings. We rent the machine and bring the mix; you add your own tequila. We do not sell or serve alcohol.

Delivery: it depends where you are

Lake Travis covers a lot of ground. Addresses inside 15 miles of Lakeway have delivery included; past that there is a $1/mile charge. Send us your address and we will give you the exact number before you book.

Where in Lake Travis we go

If your neighborhood is not listed, ask anyway — this is not an exhaustive list, just the places we end up most often.

One price, nothing added at the end

$250
per rental
  • Dual-tank frozen drink machine
  • Two flavors of your choice
  • Delivery and setup
  • Cups, and a candy garnish for every one
  • Pickup the next morning
Want the hand-squeezed one? Fresh Press — 9 real-fruit flavors · $375 Real limes, agave, and no artificial dye — the skinny margarita, made the way a good bar makes it. See the recipe →

$50 deposit holds your date and comes off the $250.

It does cold drinks too. The same machine will chill a drink instead of freezing it, so it works in December as well as July. How that works.

Sixteen classic flavors + nine Fresh Press (real fruit, no dye). See them all

Slush Sisters is run by two sisters, Harper and Finley, ages 11 and 8, with their dad driving the truck. They pick the flavors, match the candy to each one, and handle the setup. It is a real business and they run it.

Questions people in Lake Travis ask

Do you deliver to Spicewood?

Yes, though Spicewood is near the edge of our free radius, so there may be a $1/mile charge past 15 miles. Send us the address and we will give you the exact figure before you book.

Can you set up on a dock or a lower deck?

As long as there is a standard outlet the machine can stay plugged into, and a flat surface. We will not run a machine anywhere it could get knocked into the water, so a deck set back from the edge is better than the end of a dock.

Is it better for a bachelorette or a birthday?

Both work. The machine runs two flavors at once, so a lake house party can have margaritas in one tank and something non-alcoholic in the other — which is the usual setup when there are kids around as well.

What is included in the $250?

The dual-tank machine, two flavors, delivery, setup, cups, a candy garnish on every cup, and pickup the next morning. Getting it down to a dock or a lower deck is part of the setup, not an extra. A $50 deposit holds your date and comes off the total.

Do you supply the alcohol?

No. The machine arrives with frozen mix and nothing else in it. On the lake parties we do, a grown-up adds their own tequila once we have left, following the printed instructions. Worth knowing: too much and it will not freeze at all, which is the most common way one of these goes wrong.

When do you pick the machine up?

The next morning. Nobody wants to be carrying a machine back up from the water in the dark, so we leave it with you overnight and come for it in daylight.

Check if your date is open

Tell us the date and your address in Lake Travis, and we will get back to you the same day.

Book your party