Tomb of Annihilation: Tips and Tricks

I am running the Tomb of Annihilation module for a group of friends who are all experienced D&D players and I am looking for any advice or suggestions from DMs who have run this module before.

I have personal experience as a DM running a home brew campaign and I have always been interested in running this module.

Any tips or tricks with encounters in Port Nyanzaru and in the jungle would be helpful. Also looking for advice on travel and exploration in the Jungle would be greatly appreciated.