Valid & Invalid transactions

Q: I am selling physical products on an online website. I had one product in stock, but got two orders for that product. Now, I have two options: 

1. Manufacture the extra product to fulfill both my customers orders. 

2. Buy the extra product from elsewhere and then get it shipped to my customer. 

Are these options halaal? I know that dropshipping is not allowed Islamically as the seller does not own the product at the time of the sale, that is why I want clarification.

Q: Many online platforms such as Takealot, Amazon, Wish, Temu, Shein, etc. sell products which are not owned by these companies or sometimes not in the ownership or possession of these companies. Will it be permissible to purchase from these sites?

Q: 

1. A dealer purchases cars from auctions. Payment is made for these vehicles and the dealer has possession of the vehicle. However, the auctioneers generally delay paperwork and release the logbook, etc. months later. Can the dealer sell the cars before receiving paperwork? 

2. A person purchases a property but does not have the title deed as yet. It is still being processed with the master's office. Is he considered as the owner? Can he sell the property? Can he rent out the property and receive rentals?

Q: A vehicle was purchased on HP (hire to purchase). The bank still holds the log book. Is the purchaser considered to be the owner? Can he sell the vehicle?

Q: I own a butcher shop. When we weigh the meat, we weigh it with the plastic and the tray, and we charge him accordingly. Is this fine?

Q: 

1. I sell products from my business website. My supplier has 200 products. I stock 100 items but list all 200 items on the website stating 'available on order'. The customer purchases and pays for the item and I then order and ship it to the customer. Is this permissible? 

2. I post items on my WhatsApp for sale... Customers know I don't have the product. The supplier has numerous agents like myself who advertise and purchase according to order. Customers place orders and once I receive the item, they pick up and pay. Is this permissible or how can this be structured in a permissible manner?

Q: I get many customers who are either semi-drunk or completely intoxicated. Will it be permissible to sell to them? 

Q: Please clarify the following: 

We have booked and paid for a hotel breakfast. Is it permissible to take food items to my room that I am unable to eat in the breakfast room but will eat a little later.

Q: Is forex trading permissible?

Q: I have a question about a certain crypto exchange group called “mega”. Basically it’s a group that trades in a platform called “2139 exchange”. Me and my friends group joined this group because we did our research and we didn’t find anything haraam concerning it. But now I’m having some doubts. 

Basically a certain individual studies the market and predicts the direction of a certain currency and makes profits through the price fluctuations. The participants can join the trade through a futures feature and get a profit but he takes a percentage also when the participants withdraw their profits he also takes a percentage. So I want to know if it’s halaal or haraam because I heard some people saying it’s like gambling.