Hi Fiona!
Your questions make me think you're planning a trip to the Happiest Place on Earth...
If that's the case, I'm very excited to know you'll be visiting the
Disneyland Resort!
In general,
vacation packages and
hotel reservations are available for booking up to the end of the current year.
Once the vacation offerings are published for the following year (usually around the summer), you can start booking a vacation through the following summer.
Park tickets can be included as part of the vacation package.
If you choose to purchase Park tickets separately, those must be used by a specific date, usually within one year of purchase. You'll have to read the fine print on those as the expiration dates may vary depending on the type of ticket purchased.
In terms of dining reservations, you can choose between a
Character Dining Experience, a Fantasmic! Dining Package which comes with a voucher to a preferred viewing area, World of Color Dining Package or a reservation at a table dining restaurant, such as the Blue Bayou inside Disneyland or the Carthay Circle at Disney California Adventure. Guests can book their tables up to 60 days in advance. This means that even if you purchase a vacation package, you'll have to wait to reach the 60-day mark in order to make your dining reservations. Call (714) 781-DINE to make reservations.
I hope this helps! Thanks for stopping by the Disney Parks Moms Panel.
Have a Magical trip,
-Anabel M.