Traveling and no iron available?
I have two solutions that I have used. One idea is to lift one side of your bed mattress and lay your clothing item crease-free on the box spring. Gently lower the mattress, (you may need help from your room buddy); in the morning lift the mattress and your item should have less wrinkles. Another idea is to pack a curling iron and use the heated iron to run over your clothing... test an area to make sure the heat will not hurt the fabric.