Hi there Gor,
Welcome to planDisney! It's always such a treat to hear from International Guests who are planning their trips to the Disneyland Resort in sunny California. It will be such a fun trip!
Currently,
theme park reservations can be made up to 180 days in advance, so as long as you are visiting before mid-April 2024, you should be able to make your reservations for the dates of your visit. The place I typically recommend to make these reservations is the
My Plans hub on the Disneyland Resort website, but I have heard from other International Guests that this feature isn't available in all countries depending on local rules and regulations.
If you're not able to access the My Plans page that I linked above, then I would recommend reaching out to your local travel agent (if you have one) or you can
call a Cast Member directly. In case you're also not able to access the page I linked there, if you booked a Disneyland Resort Vacation Package then you'll want to call +1 (714) 520-5060. If you just purchased theme park tickets then I would start with the Guest Information line at +1 (714) 781-4636.
When you speak with a Cast Member, they should be able to give you more specific help with the details of your situation and point you in the right direction on making those theme park reservations for your upcoming trip.
Thanks again for your question, Gor! I hope you enjoy your trip to the Happiest Place on Earth!
Have a Magical Day,
Greg