Of course we also had 2-3 holes in the air ring (cat feet) and 2 holes below the water surface at the beginning of season 2011, 2012 and 2013 (note storage). All holes were successfully patched, and I a small drop of fresh gray Sikaflex from a tube (9 Euro Sailboat Equipment) overprints under water and let dry under water, and that has kept fine.
2014, we have switched to a bigger model with 21,000 liters, the kids love it and I have this year, two water beds indulged with beer can holder.
I have never regretted buying this pool, you should specify stored properly and are always working disciplined with the chlorine. After completion of the season you can also neutralize the matching chemistry chlorine value.
Last Tip: Mount External water meter helps save (log into the waterworks.