Baby 1 - show, then strong contractions, but waters not broke until late in labour (12 hours). Had all sorts for the pain, then epidural, forceps, ventouse etc. 10lb 2 oz, it hurt more once the waters had gone.
Baby 2 - nothing. Didn't realise I was in labour, had a bit of a tummy ache which I put down to eating something that did not agree. Suddenly realised I was in labour when the tummy ache became every other minute - was 9cm when arrived at hospital. Also had epidural as the anaesthetist was walking past, probably shouldn't have in retrospect, as it slowed things down, although, 2 hours pain free labour. Waters went in last 30 mins, think they got the crochet needle out to burst them. 9lb 2oz. My smallest.
Baby 3 - was induced due to 2 weeks over. Constant agony. No drugs or epidural. No show, and waters late on, again the crochet needle. 1 hour in established labour, but god knows how many hours in agony before. 9lb 13oz
Baby 4 - was induced 4-5 weeks early due to large baby, hated being induced as knew how much it hurts, and how long it takes. Snook out from hospital during the process, then wished I hadn't as waters went in McD drive in and had to hot-foot it back to hospital. 6 hours, had epidural though. 9lb 10oz. Again, waters broke with "help" about an hour before he was born.
To answer the original question, not many shows, and not much waters either. If I had my time again, I'd avoid being induced.
Congrats OP, and hoping you have a good labour, but yeah, no waters or plug is not that unusual.