"Let's hope so," Fred muttered, reaching for his own jacket and nodding an affirmation to George before Disapparating behind him. Despite his worries, Fred knew that there would be others there. He was certain that most - if not all - of the Order had gotten the Patronus, and he was certain that most - if not all - of them would respond in some positive fashion. It was extremely unlikely that he and George would be the only ones there.
Still, it took him a moment to re-orient himself once he came out of the darkness and into the sunlight. Squinting out into the water, he didn't need to observe the scene for very long before he knew just how bad it was. Alarmed, and quickly, he whipped around to find George, rushing over to him quickly so as to keep their voices down.
"I'm going to get that lot over there to some sort of safety," he decided, gesturing toward the group of huddled Muggles. "And I'll keep a look out for the others, too. They're here somewhere." Until they found them, Fred knew, there wasn't much they could do. They were outnumbered, and that was all there was to it. In the meantime, though, he knew it was imperative to move the shocked group out of the wand-line of the Death Eaters.