You'll do wonderfully - think about it, you'll be so frustrated with the added costs of every last little thing (pillows. drinks. baggage. gas tax. et cetera.) that you won't have any energy left to be nervous about the flight!!
Seriously, though. I'm a flight attendant, and I can assure you that even my colleagues who are not the most pleasant of creatures in the customer service aspect, we are all thoroughly trained to handle any emergency that arises so you don't have to worry about the safety aspect. We are required to carry with us a complete manual for quick, easy reference but we also attend annual re-training exercises that cover all of the possible incidents you mentioned above (in addition to additional training throughout the year). Anything that could possibly arise, we've been trained and had it ingrained via repetitive training to handle. This time of year the turbulence could be an issue, especially if you're in Louisiana, but know that if it weren't safe to fly ... the crew would refuse to go. We have families to get home to, too!
If you're a nervous flier and think the turbulence may send you over the edge, just let a flight attendant know when you board so they can try to keep you abreast of any impending turbulence. Grab or bring a pillow or blanket so you have something you can grab on to, and when the turbulence hits just close your eyes and take deep, meditative breaths. If the flight attendants don't look or sound like they're worried, you don't have to be either :D. I'm a single mom; if it weren't safe, I wouldn't go to work!
Have a pleasant flight, and a fantastic trip!