Translation:I will get
May 11, 2016
In the sense of 'I am/will be allowed', yes, it can, but I think people tend to use the form with bod more often as it feels less formal:
- Dw i'n cael ymdael yn gynnar heddiw, diolch byth - I can leave early today, thank heavens
The short form is certainly used very naturally for the question, though:
- Ga i fynd i bysgota yfory? - May/Can I go fishing tomorrow?