I don't know about the bag.
The lanyards they sell are here:
https://www.universalorlando.com/Merchandise/ProductList.aspx?q=lanyard The clear pouch seals with a zip-lock type to keep the tickets / passes dry.
In 2012, the tickets were paper tickets the size of a cc. Each person was supposed to sign theirs, and they are linked to you by your fingerprint. We just made sure there was a name on each one so that everyone had their own ticket and we weren't holding up the line.
UCT shipped this year's tickets on Monday, so they will probably be here tomorrow. I'll be able to tell then if they are still paper or not.
Note that you can also find nice lanyards on ebay. I got all our HP lanyards off ebay this year. I will have to buy plastic sleeves with zip-lock type closures for each, but I wanted the boys to have them beforehand. They just used the Disney lanyards with the coin purse pouches last time.
Any lanyard you have will work if it has a clear plastic pouch. Just be sure the pouch zips closed to avoid soaking it, either on one of the wet rides or in the rain. I'm getting 12 off ebay for $4.50 with free shipping. I'm set for life.