Yes in both cases expect to see this film grow and take over the top of your beer. It might develop as a saran wrap-like appearance, a patchy white film, a dusty off-white coating, or a crunchy looking thick white mat-like film. Any of these are fine. Brett creates this pellicle as a function of its brewing in most cases. If you do a google image search for "pellicle" then you'll find pages and pages of similar pictures.
You will need to do some extra work to sanitize that equipment. You need to opt for a basic sanitizer rather than an acid sanitizer like starsan to effectively kill brett. Iodophor is a good choice. I normally use starsan but for any equipment that shares clean and sour/brett post-boil I use a bleach sanitizer. That applies to fermenters, racking equipment, bottling equipment, etc.
Are these beers in buckets? Now would be a good time to rack them into carboys with less headspace if you have them. If not, avoid opening the buckets as much as possible. Air exposure is the villain for these beers. Great way to produce vinegar and nail polish remover.