Here is a schedule for the upcoming world championship triathlon meet in September. It looks like the Marina / Caleta will be blocked for most of the week. I am not sure if any provisions have been made for the dive operation that have been forced to use the new Fonatur marina.
SATURDAY, SEPTEMBER 10 EVENT VENUE
12:00pm to 8:00pm Open Race Expo and Packet Pick Up Fonatur Triathlon Park
SUNDAY, SEPTEMBER 11 EVENT VENUE
5:40am to 6:40am Transition Open / Bike Check In Fonatur Triathlon Park
6:40am to 8:00am Open Race Youth 14-15 Fonatur Triathlon Park
7:00am to 9:30am Open Race Standard Distance Fonatur Triathlon Park
8:45am to 11:00am Open Race Sprint Distance Fonatur Triathlon Park
3:30pm to 4:30pm Kids Transition Open / Bike Check in Fonatur Triathlon Park
4:30pm to 4:45pm Kids 6-7 event Fonatur Triathlon Park
4:45pm to 5:00pm Kids 7-9 event Fonatur Triathlon Park
5:00pm to 5:20pm Kids 10-11 event Fonatur Triathlon Park
5:20pm to 5:50pm Kids 12-13 event Fonatur Triathlon Park
TUESDAY, SEPTEMBER 13 EVENT VENUE
12:00pm to 8:00pm ITU World Championship Expo / Packet Pick Up Fonatur Triathlon Park
WEDNESDAY, SEPTEMBER 14 EVENT VENUE
8:00am to 11:15am Aquathlon World Championship Fonatur Triathlon Park
12:00pm to 8:00pm ITU World Championship Expo / Packet Pick Up Fonatur Triathlon Park
5:00pm to 8:00pm Opening Ceremony 5th Av. Playa del Carmen
THURSDAY, SEPTEMBER 15 EVENT VENUE
6:45am to 11:00am Age Group Sprint World Championship Fonatur Triathlon Park
12:00pm to 8:00pm ITU World Championship Expo / Packet Pick Up Fonatur Triathlon Park
4:00pm to 6:30pm U23 Men World Championship Fonatur Triathlon Park
FRIDAY, SEPTEMBER 16 EVENT VENUE
9:00am to 11:30am U23 Female World Championship Fonatur Triathlon Park
12:00pm to 8:00pm ITU World Championship Expo / Packet Pick Up Fonatur Triathlon Park
3:00pm to 4:30pm Junior Men World Championship Fonatur Triathlon Park
5:00pm to 6:30pm Junior Female World Championship Fonatur Triathlon Park
SATURDAY, SEPTEMBER 17 EVENT VENUE
9:00 to 10:30am U23/Junior Mixed Relay World Championship Fonatur Triathlon Park
12:00pm to 8:00pm ITU World Championship Expo / Packet Pick Up Fonatur Triathlon Park
3:30pm to 6:00pm Elite Female World Championship Fonatur Triathlon Park
SUNDAY, SEPTEMBER 18 EVENT VENUE
6:45am to 12:30pm Age Group Standard World Championship Fonatur Triathlon Park
3:00pm to 5:30pm Elite Male World Champinship Fonatur Triathlon Park
6:30pm to 9:00pm Closing Ceremony TBD
Here is a link to a map which shows the courses which are centered on the marina
Maps