301 seconds, only 77 bags (on laptop).

Of those I opened 50 and got:

1x pinecone book
1xfancy bday skirt
1 x fancy bday sleeves
1x frilly bikini
1x bow shoes
2x cupcake book
1 x ocean waves
1x ocean wig
5 x party picollo
12x party tamborurine
1x rainbow crikey
4 sherberts maybe
12x birthday candles/balloons
7x cakes

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92 seconds on mobile
20 bags
(Opened only 4)