Hi PPP
I've just returned from Orlando Flight Training, having gained my PPL.
I also went at very short notice, concerned about booking a/c & instructors at the last minute. Turns out when I got there that these things can be sorted a day or two in advance - not a month in advance like in sunny UK (which is actually sunny for a change
). Naturally, this might not be the case at every school.
I also flew twice a day. As for best times to fly, RVR800 made some good recommendations, especially with the mornings - definately the best time to fly. Occasionally, the only prob with very early morning (0700) is the vis. can sometimes be too low until temp rises (above dewpoint etc...). Generally, that didn't hinder most of us though.
Flying in Florida is fantastic, so I'm sure you'll have a good time.
Good luck & be safe,
ATCS
PS Which school are you planning on?