Maybe some cupcakes and the jelly idea is great.

Blueberry Jelly Cups would be perfect!

I like the idea of the blue jelly cups with a freddo frog! Cool!

Sticky rice shaped into a snowman shape with raisins as eyes, chocolate buttons, a carrot nose, chocolate chip mouth and pretzel stick arms is always a hit!

Hi, my daughter had her 5th Birthday party today it was a frozen party. Things that could travel well are Olaf buttons: Sultanas, Olaf noses: cheese Twistees, snowflakes: popcorn, Olafs arms: pretzels. Chocolate to stuff in your face ( from show) blue smarties and white marshmallows for colour effect.

Another hint google “Frozen” games.

SIMPLY GOOGLE sooo many ideas it will have your head in a spin..lol.
Wonderful ideas from members here as usual though.

What about Blue jelly cups with a freddo frog in it or something like that. That should last and would be quick and easy to make as well. The fairy bread with blue sprinkles would also be a great idea, that could even be made quickly at the location if need be.

Marshmallows on a stick for Olafs, blue cordial (just take lemon cordial and tint it with blue colouring), fairy bread that uses blue and white sprinkles instead of coloured. Have fun and good luck!

Blue lemonade, coconut covered balls, carrot sticks, pretzels, popcorn (some melted blue white choc over some)

blue toffee with blue or white sprinkles
cookies that you make- star shaped of course
frozen doll as a cake centrepiece or build the doll into the cake.

i can’t remember if it was here or elsewhere but look up frozen castle cake. very easy to do!

Olaf marshmallow snowmen, snowflake biscuits

anything blue works, so you could still do fairy bread etc. jelly might be hard to transport and could melt so you might need to look at things you could easily assemble when you get there or borrow a lot of esky’s !

Sandwiches, blue cupcakes, big bowl of blue m and ms!

Marshmallows dipped in blue sugar, blue and white meringues, blue coconut ice, marshmallow snowmen, blue cordial or blue lemonade, snowball donuts

You could pack up some coleslaw in a container and some bread rolls. Maybe some cold chicken or other cold meats and have a “We finish (making) each others sandwiches” station. You could also do cold meatballs and call them Troll Balls or something. You could google a recipe for popcorn snowballs. Carrot sticks (Olaf’s noses) and trail mix (Sven’s snacks) are great. We had marshmallows, mini m&ms, pretzels, and choc buds in different trays for the kids to make Olaf.

Love the snow cone idea. Sounds like so much fun to make their own. What about coconut ice.

Snow flake shaped sandwiches would be cool.

You could make pikelets and cut with a cookie cutter in the shape of a snowflake or Princess Tiara butter and sprinkle with blue and white sprinkles or you could even colour the pikelet mix blue.
You could make blue marshmallow icecream cones using a simple marshmallow recipe.
Blue lemonade or even water with a drop or two of blue colouring will give the effect with out the sugar.

blue sprinkles mixed through a simple butter cake made into cupcakes with a dab of blue food dye in plain vanilla icing.