"Were" is not required in either case.

"If you must drive to the ground than be aware that traffic around the Moore park and SCG area can be congested and slow moving just before play starts and when it ends."
from: http://www.roadlesstravelled.com.au/guide-to-...

"There is ample parking if you wish to drive to the ground"
from: http://www.simulationcricket.com/venues.php

"You can either travel by bus or drive to the ground, there is no rail connection close to the ground."
from: http://www.cardiffrfc.com/

Was meinst Du mit "drive to the ground"?

Das sollte ein Synonym dafür sein, dass der Sänger fertig ist, durch den vielen Alkohol "auf den Boden gezogen" wird.

Soll ein bildlicher Vergleich sein, ich hoffe, der kann so stehen bleiben.

in den Boden treiben, I'd guess

Ja, wie schon gesagt, ein Bild, Wein und Alkohol fahren ihn eben in den Boden ...

If I might suggest a couple of minor adjustments:

Remember those days of springtime
Raindrops falling all 'round
Too much wine and too much whiskey
Driving me slowly down to the ground

I think it might 'scan' better

Many thanks!

the 'remember' suggests a description of the past will be in the next few lines, so no past tense is needed. but i've never thought about this construction before,it's interesting. does it have a grammatical name?

luke #8: "does it have a grammatical name?"

It can be parsed in multiple ways, but the most straightforward is that these are participial phrases.

"Do you remember...raindrops" - "raindrops" is the direct object of the verb "remember", "falling" is a present participle, and "falling all around" is a participial phrase (or participle phrase) modifying "raindrops".

Similarly, "do you remember... wine and whiskey" - "wine" and "whiskey" are the direct objects of the verb "remember". And "driving me slowly down to the ground" is a participal phrase modifying "wine and whiskey".

You can Google "participle phrase" to read more.