I always travel with a good hairdryer (I have yet to find a decent one in a hotel) and a set of heat stylers. Both are US voltage as taking UK electricals doesn't cut it. The power just isn't strong enough to tame these locks effectively!
A few years ago I was in Jamaica (also for a wedding) and the wind was blowing a gale of damp air from the sea and my hair although more of a bob, was a complete nightmare. Short of having it braided (not going to happen!) it was eventually held in place by placing my sunglasses on my head a la Alice band style.
This year I think I will go vintage .. and depending of whether this keratin stuff works, it will either be hippy freak or a glamorous 40's victory roll!
See you before Christmas!!