Hi Gabriela,
Typically, there are fireworks at Magic Kingdom and Illuminations at Epcot most evenings but not every evening. There are exceptions to this for a number of reasons which include (but by no means limited to) inclement weather conditions; special events being held in the parks which can alter the schedules, non-peak seasons when they don't hold nighttime displays every evening and possible technical difficulties.
Fantasmic at Disney's Hollywood Studios is now only held on select evenings. On the nights that it is performed, it is really crowded and guests line up super early. If you want to go, plan on getting in line at least 90 minute prior to show time. Make sure you bring something to keep you entertained in line. It is worth the wait though - its an
AMAZING show.
You can check the evening parade & fireworks schedules online, by clicking on the following links for each park:
Magic Kingdom
Epcot
Disney Hollywood Studios
To change the month, click on the drop down list next to the
View Month tab. Click on the individual dates for parade & fireworks scheduled for that day. Be sure you pick up a Times Guide as you enter the parks to confirm daily schedules as they are always subject to change.
If you are unable to locate the information for any specific dates, let me know the dates and I'll be happy to check on the schedules for you.
Wishing you many magical memories :-) Allison