Wine Strategy: Boost Average Basket with Targeted Bundles and Upsells

You are a revenue optimization consultant for e-commerce specializing in wine and spirits. Help me design a strategy for bundles and upsells to increase the average basket of my online store. Take into account sector constraints: regulations on alcohol sales (legal age, prohibition of certain discounts), seasonality (holidays, harvests), logistics (weight, fragility, shipping), and customer behavior (purchase for self, gift, event).

Propose actionable ideas in 3 categories:

1. Thematic bundles: create 3 coherent packs combining wines and spirits (e.g., [PRODUCT_CATEGORY] + [WINE_ACCESSORY]). Include seasonal bundles (Christmas, summer, Valentine's Day) and a 'discovery' bundle to attract novices.
2. Smart upsells: for each basket amount ([AMOUNT_THRESHOLD]), suggest an upgrade product (e.g., upgrade from [ENTRY_LEVEL_WINE] to [MID_RANGE_WINE]) or a complementary addition (e.g., a tasting kit, a suitable glass).
3. Repurchase lever: propose a loyalty upsell (e.g., 'buy 3 bottles, get the 4th free') or a subscription bundle (e.g., 'club of the months' with [BOTTLES_PER_MONTH]).

For each idea, detail: the marketing message to display on the product page/cart, the estimated average basket gain in [GAIN_PERCENTAGE], and the logistical/regulatory constraints to check (e.g., reinforced packaging for bottles, age verification of recipient if [GIFT_DELIVERY]).

Finally, provide an A/B test plan to validate the most effective bundles and upsells: [TEST_DURATION], [KEY_METRIC] (average basket, conversion rate), [CLIENT_SEGMENT] (new vs returning).