Used to make a ton of spring rolls ( lumpia ) both with Vietnamese rice paper as well as very thin flour paper as my husband was diagnosed with gluten enteropathy back in 1972 when readily available gluten free products were virtually non existent. Il would roll out a hundred of them each time, then freeze them readily to pan fry when needed,
Personally, I prefer the very thin flour/duck egg sheets that our family chef used to make, smearing a very thin layer on a wok for just a few seconds but nowadays, one can buy premium lumpia sheets from Asian stores, and even better, they come in individually separated sheets so there is no need for the painstaking time to defrost, separate them and hope they will not tear as they are very delicate, There are 2 versions from the same company, Simex. Be sure it is labeled as individually separated sheets. They can be rolled fresh and eaten shortly after or pan fried which is quite crunchy. This is nothing like the spring rolls sold at restaurants.
https://www.heb.com/product-detail/simex-individually-lumpia-wrapper/1893571
As for Vietnamese rice crepes, . For mass production, I usually would have 4 dinner sized plates ready , a bowl of lukewarm water, filling readily to assemble, then soak the sheets briefly, place them on my dinner plate , then the filling, and by the time I got to this stage, , the sheets will soften and be stretchy as one works and roll.
When we used to visit a 5 star Vietnamese restaurant in DC, they have a bowl that was custom made or them for their guest. They bring the bowl to the table with the wrappers and filling for the guest to make their own rolls by a quick dip of the sheets in the warm water, rotating it as it can only accommodate half the sheet, then roll themself. It is now available in the internet, both amazon and Ebay if and when Mrs. P would like her guests to prepare the rolls and eat it fresh themselves
I hope this helps! Try the Simex , I promise Mrs. P will like that. .