We have stayed at Paradise Pier twice and enjoyed both stays. PP does have two restaurants, I think the Japanese one Yamabuki has a lounge, not completely sure however! They do have a pool bar, both times we have been it has not been open but those trips were off season. That is during the spring break season for your visit so it might be open. One option is Downtown Disney. There are multiple restaurants and clubs (some with live music). You have to walk right through Downtown Disney on your way to and from the hotel. It is a nice way to unwind at the end of the day. They are all perfect for families, we take our kids to Tortilla Joes, have a margarita sometimes dinner and review our fun day at least once or twice each trip! The
Disneyland Hotel also has an outdoor bar called the Lost Boys Bar where you can have drinks and there is a small takeout place that has appetizers, bugers etc right there as well. You don't have to be a guest of the hotel to take advantage of that. Also, that is a piece of cake to get to as you walk back from the parks in the evening. Just head straight into the Disneyland Hotel grounds and you can't miss it. It is a short walk from the Paradise Pier Hotel and not much out of the way as you walk back from the parks.
The walk from the hotel is 10-15 minutes depending how fast you walk. It is a pleasant walk up Downtown Disney. There is only one street you cross with any type of car traffic and that is just an entrance to the hotel parking lot, not a busy street. Downtown Disney is actually really fun to walk through, at night they have live music, there are lots of stores with plenty of window shopping opportunities. They have nice restaurants and also places that sell ice cream, pretzels and hot dogs. Something for everybody.
If this is your first Disneyland trip I would really recommend a guide book like Birnbaums or the Unoffcial Guide (or both for that matter). You can buy them for under $20 each or check them out at the library. They will give you tips on fastpass, dining options and rides. They will also give you the height requirements for each ride. Measure your kids, look up the various rides and then you can tell before you ever leave home if that is something they can or can't ride. That can save some tears and disappointment! I was so glad I had bought Birnbaums before our first trip, my kids really enjoyed looking at it and it helped familiarize me with Disneyland a bit, I had only been once as a kid and didn't know what to expect! This board is also a wealth of information. Do a search and find Hydroguy's tips on fastpass. He is a poster who really has that down pat. If you put his name (hyrdoguy) on the search option, his posts will come up. I wish I knew how to link that for you, maybe somebody else can do that!
I would also suggest you do a character meal. We love Goofy's Kitchen which is inside the Disneyland Hotel and also Paradise Pier has a very fun character breakfast each day featuring Lilo and Stitch. If you have Disney princess fans, there is a princess lunch/dinner at Ariel's Grotto inside the California Adventure park. Character meals aren't cheap but they are sure a great way to meet characters in a fun and more personal setting. You can call Disney Dining 60 days prior to your trip and make priority seatings. The number is 714-781-3463. There is information on each restaurant in Disneyland, California Adventure, Downtown Disney and the three resort hotels in both of those above mentioned books. You can also go to
www.allearsnet.com for menus on Disneyland restaurants. Click on "50th Anniversary" and information on Disneyland will come up (this site is mostly for Disneyworld but under that 50th section is quite a bit on Disneyland).
Good luck, I know your family will have a great time!
P.S. I just remembered, on our second stay at Paradise Pier I called to see how much an upgrade to a theme park view would be. It was $23 a night and well worth it. You might call the hotel and ask them what a view might cost you if that is something you would like to have.