Hello, I am sorry but I have to ask.
You state you've bought a "good amount" of shares. Which equates to a good amount of $$$$.
Have you read any of the announcements or done ANY research at all into the company or this takeover? My guess is no, as it's stated a multitude of times.
The previous reply said, yes to be safe.
Unequivocally you must accept if you want to. If not risk GXY paying you out.
You will not get the paperwork in the snailmail in time id say, so you simply call your broker/trading platform provider and direct them to accept on your behalf.
You will know it's done when you cannot see you holdings however the value remains.
It's the bloody weekend Mate, have some care about your hard earnt $$$$$$ and do a Minute of reading.