I.m not sure of the temperature right now.I assume it's close to New Orleans weather. You will have to check the latest weather forecasts on your phone ,etc. It is summer now and it's in the lower 90's with no rain predicted this week. It's humid as the weather here is tropical.

If the area isn't designated for parking, I'm not sure what might happen. Why not contact the specific park to find out what they suggest?

Yes you will but Wildlife activity will have diminished to some part due to it being a bit colder. That being said, I visited the area in early February and it was 80 degrees one day. Highly recommend this place for wildlife sightings. This is coming from a biologist.

There are only two trail, one at each of the stops. Both are very good and you should walk both of them. Keep your eyes out for wildlife, there's plenty of it but you have to have a keen eye. Definitely watch out for snakes, some are venomous.

Barataria: stop in at the visitor's center if you are there for the guided tour (which I recommend), then get back in car and go back to the trailhead. Staff at the visitor's center will tell you where.

No tickets required. Just head out on the trail.

It's a self- guided tour anytime between 10am and 4:30pm