I highly recommend taking a look at
HydroGuy's A DLR Guide for WDW Vets if you've been to WDW and are familiar with that resort.
As far as I know, there are no places offering a special dinner for Easter (a few have a special brunch, but that's about it). What kind of foods do you and your family like? What type of meal are you looking for (i.e., sit down? casual?)? My favorite TS locations are Cafe Orleans (DL), Carnation Cafe (DL), River Belle Terrace (DL), Ralph Brennan's Jazz Kitchen (DTD), and Storytellers (GCH). For Easter Sunday (mostly because it is a Sunday during Spring Break), I would highly recommend making a reservation.
https://disneyland.disney.go.com/dining/#/reservations-accepted/
For attractions, I would make use of FP whenever possible, along with rope drop, and single rider lines (when possible, if your family is willing to ride apart). The first 90 minutes of the day is usually when there are the shortest lines, so I would try to be in the parks as close to opening as possible, especially if you want to ride the most popular attractions (e.g., RSR, TSMM, HyperSpace Mtn, Peter Pan, etc.). I would also plan for long lines at security and the ticket booths (it took my family about 30 minutes to get through security and the ticket booths last Sunday).
Do you have the official
Disneyland App? If not, I highly recommend downloading it. It gives you attraction wait times and current FP return times, along with character and entertainment schedules. I found it to be pretty reliable last week (there is about a 5 to 10 minute lag in when information is updated, but for the most part, it worked well when I was using it).