Usually, absorbable stitches are dissolved by the time the area is healed which is within 10-14 days. I would, therefore, expect it to be too early for them to dissolve.
If there is any gaping of the wound's edges and the area look red, swollen or infected, then that would warrant a vet visit. An emergency visit is warranted if there is bleeding/wide gaps or if the dog starts acting ill and lethargic.
If there are no gaps, there are chances that the vet has placed some buried sutures that hold things together. It would be best though to contact a vet just to be safe.
Being a weekend and a festivity, your clinic should have arrangements for after-hours emergencies. If you call your regular clinic most likely, the answering service will inform you about some emergency clinic open nearby. You can then contact the ER clinic and see what they think.
Chances are, if there are no major gaps or signs of bleeding, they may suggest covering the area temporarily with some non-stick bandage and checking the area a couple of times a day. An Elizabethan collar may be needed to protect the area from further licking. Best wishes.