Start with a quick South Indian breakfast — idli/dosa/medhu vadai or a light tiffin; A2B outlets typically open from ~6:30am and are fast for early travel days.
Drive north on NH44/SH39 toward Tirunelveli; expect roughly 2 hours road travel depending on traffic, so leaving at 8:00am gets you into town mid-morning for markets.
Begin Diwali shopping here for ready-made clothes, kids' outfits, and general decorations — this central bazaar (near the bus stand/railway) hosts many small shops and stalls; most shops open by 9:00am and stay open until 8:00pm.
Taste and buy famous Tirunelveli halwa and other sweets from a trusted shop near the market area; sweets shops usually open from 9:00am and are busiest at midday — bring a small insulated bag for purchases.
Have a relaxed South Indian thali or seafood (if you prefer) to refuel — many restaurants open for lunch from around 11:00am and serve until mid-afternoon; Saravana Bhavan is reliable for pure veg options.
Head to the textile lanes (Palayamkottai area) for sarees, dress materials and blouse fabrics; shops normally open by 10:00am and offer good Diwali-season selections and festive discounts — try on and confirm stitching timelines if you plan tailoring.
Visit specialized shops for clay diyas, brass kuthuvilakku (lamps), string lights and simple jewelry for Diwali gifting; most of these stores remain open through late afternoon (check individual shops but generally open till 6–8pm).
Use this time to consolidate purchases, confirm invoices, bargain final prices, and take photos around the temple precinct; note: Nellaiappar Temple has split morning/evening timings (often closed midday), so plan formal darshan for later if needed.
After return, relax with an early dinner at Sangeetha or a2B (Nagercoil) — choose a comforting South Indian thali or local non-veg dishes; most restaurants serve until late evening and are convenient for post-trip unpacking.