If you are travelling with family to Pattaya there are great accommodation option available in and around Pattaya. Pattaya has undergone massive development in the last decade and you will observe large housing complexes and buildings along the Pattaya to Jomtien beach which is located around 5 km south of Pattaya CBD.
There are plenty of options to travel to Pattaya from Bangkok. If you are just planning to visit Pattaya catches a taxi costing around 1000 Baht. The prices are fixed for taxis from the airport. A better option is that you can rent a car from Avis or Eurocar at Bangkok Intl.