[NSW] Penrith Lakes Aqua Park - Single 50 Min Session $13.50 (Usually $20) @ Groupon

Cheap fun activity for the kids (and adults) these holidays located inside the Regatta Centre in Penrith Lakes 10am to 5pm daily.
Note - it says 'Limited Time Remaining' but doesn't say exact expiry to get at this price. I called the number and they said "a few days"
Update: I also asked when these vouchers will need to be used by and they said 28 Jan 2020 as it is only in place for school holiday season.

Further discounts available with Shopback (10% cashback) / New Groupon Users discount

$13.50 for one 50-minute session (total value up to $20)
$22 for two 50-minute sessions (total value up to $35)
$35 for a full-day pass (total value up to $55)

Enjoy one or two 50-minute sessions at this inflatable obstacle course on water
Suitable for adults and kids. All sessions are valid for one person only

Limit of 1 voucher per person
• Purchase up to 1 additional as a gift
• Not valid on 25 Dec 2019, and 18, 19 and 25 Jan 2020
• Participants must sign a general release waiver. Parents / Legal guardians need to complete this for any children under 15 years of age
• Participants must be 3 years or over. Under 3 years of age are not permitted on the park
• Ages 3 to 6 may use the park but must be accompanied by their parent at all times who takes full responsibility for them
• There is no casual swimming available in the lakes. Those who are pregnant or people with pre-existing injuries are not advised to go to the park as it is slippery and unstable as per our safety brief
• Each Aqua Park 50-minute session begins on the hour from 10am
• 2 session option: must be used on same day in back-to-back sessions by the same person
• Please arrive 20 mins prior to the start of a session to have your life jacket fitted
• You may bring a packed lunch, snacks, drinks (no alcohol permitted) and please note that Sydney International Regatta Centre is a glass-free venue. There is a kiosk located on-site, a brief 2-3 minute walk from the Aqua Park location. There is also a restaurant (Lakeside Restaurant) open for breakfast, lunch & dinner)
• All sessions must be used by the same person
• Penrith Lakes Aqua Park Safety Rules: http://penrithlakesaquapark.com.au/safety-rules/
• Penrith Lakes Aqua Park FAQs: http://penrithlakesaquapark.com.au/facts-and-faqs/